{"id":1873,"date":"2025-03-18T13:48:24","date_gmt":"2025-03-18T13:48:24","guid":{"rendered":"https:\/\/blog.topexamcollection.com\/?p=1873"},"modified":"2025-03-18T13:48:24","modified_gmt":"2025-03-18T13:48:24","slug":"mar-2025-pass-your-1z0-084-exam-at-the-first-try-with-100-real-exam-q24-q48","status":"publish","type":"post","link":"https:\/\/blog.topexamcollection.com\/de\/2025\/03\/mar-2025-pass-your-1z0-084-exam-at-the-first-try-with-100-real-exam-q24-q48\/","title":{"rendered":"Mar-2025 Pass Your 1Z0-084 Exam at the First Try with 100% Real Exam [Q24-Q48]"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;1873&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;1&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;5\\\/5 - (1 vote)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Mar-2025 Pass Your 1Z0-084 Exam at the First Try with 100% Real Exam [Q24-Q48]&quot;,&quot;width&quot;:&quot;142.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 142.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            5\/5 - (1 vote)    <\/div>\n    <\/div>\n<p><span style=\"font-size: 18px\"><strong><span style=\"color: red\">Mar-2025 Pass Your 1Z0-084 Exam at the First Try with 100% Real Exam<\/span><\/strong><\/span><\/p>\n<p><strong><span style=\"color: red\">Get Real Exam Questions for 1Z0-084 with New Questions<\/span><\/strong><\/p>\n<p><\/p>\n<p>Oracle 1Z0-084 exam is a comprehensive certification that tests the candidates\u2019 knowledge and skills in performance tuning and management of Oracle Database 19c. It is an essential certification for database administrators, performance analysts, and developers who want to improve the performance of their database systems. By earning the Oracle Certified Professional, Oracle Database 19c Performance and Tuning Management certification, candidates can demonstrate their proficiency in performance tuning and management, and improve their career prospects in the field of database management.<\/p>\n<p><\/p>\n<p>Oracle 1Z0-084 exam is designed to test a candidate&#8217;s knowledge and skills in managing and tuning the performance of an Oracle Database 19c system. 1Z0-084 exam is intended for database administrators, performance analysts, and technical consultants who are responsible for ensuring the optimal performance of Oracle Database systems. 1Z0-084 exam covers a range of topics, including database architecture, memory management, SQL tuning, and system troubleshooting.<\/p>\n<p>&nbsp;<\/p>\n<div id=\"watu_quiz\" class=\"quiz-area single-page-quiz\">\n<form action=\"\" method=\"post\" class=\"quiz-form \" id=\"quiz-797\" >\n<div class='watu-question' id='question-1'><div class='question-content'><p><strong>NEW QUESTION 24<\/strong><br \/>Which procedure gathers statistics that are always used in the generation of any execution plan?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15652' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60508' \/><div class='watu-question-choice'><input type='radio' name='answer-15652[]' id='answer-id-60508' class='answer answer-1 js-answer-label answerof-15652' value='60508' \/>&nbsp;<label for='answer-id-60508' id='answer-label-60508' class='js-answer-label answer label-1'><span class='answer'>DBMS_STATS.GATHER_DICTIONARY_STATS<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60509' \/><div class='watu-question-choice'><input type='radio' name='answer-15652[]' id='answer-id-60509' class='answer answer-1 js-answer-label answerof-15652' value='60509' \/>&nbsp;<label for='answer-id-60509' id='answer-label-60509' class='js-answer-label answer label-1'><span class='answer'>DBMS_STATS.GATHER_FIXED_ OBJECTS_STATS<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60510' \/><div class='watu-question-choice'><input type='radio' name='answer-15652[]' id='answer-id-60510' class='answer answer-1 php-answer-label answerof-15652' value='60510' \/>&nbsp;<label for='answer-id-60510' id='answer-label-60510' class='php-answer-label answer label-1'><span class='answer'>DBMS_STATS.GATHER_DATABASE_STATS<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60511' \/><div class='watu-question-choice'><input type='radio' name='answer-15652[]' id='answer-id-60511' class='answer answer-1 js-answer-label answerof-15652' value='60511' \/>&nbsp;<label for='answer-id-60511' id='answer-label-60511' class='js-answer-label answer label-1'><span class='answer'>DBMS_STATS.GATHER_SYSTEM_STATS<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>TheDBMS_STATS.GATHER_DATABASE_STATSprocedure is used to gather statistics for all schema objects in the database that do not have up-to-date statistics. These statistics are essential for the optimizer to make informed decisions about the most efficient way to execute a query. The procedure collects statistics such as table and column statistics, index statistics, and system statistics, which are all used in the execution plan generation.<br\/>References:<br\/>* Oracle Database PL\/SQL Packages and Types Reference, 19c<br\/>* Oracle Database Performance Tuning Guide, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(1,this)' id='btn-1' value='See Answer'  \/><input type='hidden' id='questionType1' value='radio' class=''><\/div><div class='watu-question' id='question-2'><div class='question-content'><p><strong>NEW QUESTION 25<\/strong><br \/>Database performance degraded between 23:15 and 23:30 for the last three nights. The awr snapshot interval is one hour. The AODM report contains nothing about this performance problem.<br \/>With which tool can you further analyze this problem?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15653' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60512' \/><div class='watu-question-choice'><input type='radio' name='answer-15653[]' id='answer-id-60512' class='answer answer-2 js-answer-label answerof-15653' value='60512' \/>&nbsp;<label for='answer-id-60512' id='answer-label-60512' class='js-answer-label answer label-2'><span class='answer'>SQL Performance Analyzer<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60513' \/><div class='watu-question-choice'><input type='radio' name='answer-15653[]' id='answer-id-60513' class='answer answer-2 js-answer-label answerof-15653' value='60513' \/>&nbsp;<label for='answer-id-60513' id='answer-label-60513' class='js-answer-label answer label-2'><span class='answer'>AWR Compare Periods report<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60514' \/><div class='watu-question-choice'><input type='radio' name='answer-15653[]' id='answer-id-60514' class='answer answer-2 js-answer-label answerof-15653' value='60514' \/>&nbsp;<label for='answer-id-60514' id='answer-label-60514' class='js-answer-label answer label-2'><span class='answer'>SQL Tuning Advisor<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60515' \/><div class='watu-question-choice'><input type='radio' name='answer-15653[]' id='answer-id-60515' class='answer answer-2 php-answer-label answerof-15653' value='60515' \/>&nbsp;<label for='answer-id-60515' id='answer-label-60515' class='php-answer-label answer label-2'><span class='answer'>Active Session History report<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The Active Session History (ASH) report is a tool that provides detailed information about active sessions for the time period specified. Since the AWR snapshot interval is one hour and does not capture the granularity needed for this issue, ASH reports aremore suitable as they contain more granular data for sessions that were active during the period of interest.<br\/>References:<br\/>* Oracle Database Performance Tuning Guide, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(2,this)' id='btn-2' value='See Answer'  \/><input type='hidden' id='questionType2' value='radio' class=''><\/div><div class='watu-question' id='question-3'><div class='question-content'><p><strong>NEW QUESTION 26<\/strong><br \/>Which two statements are true about the use and monitoring of Buffer Cache Hit ratios and their value in tuning Database I\/O performance?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15654' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60516' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15654[]' id='answer-id-60516' class='answer answer-3 js-answer-label answerof-15654' value='60516' \/>&nbsp;<label for='answer-id-60516' id='answer-label-60516' class='js-answer-label answer label-3'><span class='answer'>The performance of workloads that primarily generate full table scans and fast full index scans are always affected by the cache hit ratio.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60517' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15654[]' id='answer-id-60517' class='answer answer-3 php-answer-label answerof-15654' value='60517' \/>&nbsp;<label for='answer-id-60517' id='answer-label-60517' class='php-answer-label answer label-3'><span class='answer'>A 99% cache hit ratio can be observed for database instances which have very poor I\/O performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60518' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15654[]' id='answer-id-60518' class='answer answer-3 php-answer-label answerof-15654' value='60518' \/>&nbsp;<label for='answer-id-60518' id='answer-label-60518' class='php-answer-label answer label-3'><span class='answer'>The buffer cache advisory view v$db_cache_advice provides advice on cache hit ratios appropriate for the instance workload.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60519' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15654[]' id='answer-id-60519' class='answer answer-3 js-answer-label answerof-15654' value='60519' \/>&nbsp;<label for='answer-id-60519' id='answer-label-60519' class='js-answer-label answer label-3'><span class='answer'>Both the RECYCLE and KEEP buffer caches should always have a very high cache hit ratio.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60520' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15654[]' id='answer-id-60520' class='answer answer-3 js-answer-label answerof-15654' value='60520' \/>&nbsp;<label for='answer-id-60520' id='answer-label-60520' class='js-answer-label answer label-3'><span class='answer'>A 60% cache hit ratio can be observed for database instances which have very good I\/O performance.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>A high buffer cache hit ratio typically indicates that the database is effectively using the buffer cache and does not often need to read data from disk. However, this metric alone is not a reliable indicator of the I\/O performance of the database for several reasons:<br\/>* Full table scans and fast full index scans (A) can bypass the buffer cache by design if the blocks are not<br\/>* deemed reusable shortly, which can impact the cache hit ratio.<br\/>* A high cache hit ratio (B) can be misleading if the database performance is poor due to other factors, such as inefficient queries or contention issues.<br\/>* The buffer cache advisory (C) is a more valuable tool for understanding the potential impact of different cache sizes on the database&#8217;s I\/O performance. It simulates scenarios with different cache sizes and provides a more targeted recommendation.<br\/>* The RECYCLE and KEEP buffer caches (D) are specialized caches designed for certain scenarios.<br\/>While high hit ratios can be beneficial, they are not universally required; some workloads might not be significantly impacted by lower hit ratios in these caches.<br\/>* A lower cache hit ratio (E) does not necessarily mean poor I\/O performance. In some cases, a system with a well-designed storage subsystem and efficient queries might perform well even with a lower cache hit ratio.<br\/>References<br\/>* Oracle Database 19c Performance Tuning Guide &#8211; Buffer Cache Hit Ratio<br\/>* Oracle Database 19c Performance Tuning Guide &#8211; v$db_cache_advice<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(3,this)' id='btn-3' value='See Answer'  \/><input type='hidden' id='questionType3' value='checkbox' class=''><\/div><div class='watu-question' id='question-4'><div class='question-content'><p><strong>NEW QUESTION 27<\/strong><br \/>What are the least elevated values of statistics_level and C0NTR0LJ4ANAGEMENT_PACK_ACCESS that allow the usage of Monitoring of Database Operations?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15655' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60521' \/><div class='watu-question-choice'><input type='radio' name='answer-15655[]' id='answer-id-60521' class='answer answer-4 php-answer-label answerof-15655' value='60521' \/>&nbsp;<label for='answer-id-60521' id='answer-label-60521' class='php-answer-label answer label-4'><span class='answer'>STATISTICS_LEVEL=ALL and<br \/>CONTROL_MANAGEMENT_PACK_ACCESS=DIAGOSTIC+TUNING<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60522' \/><div class='watu-question-choice'><input type='radio' name='answer-15655[]' id='answer-id-60522' class='answer answer-4 js-answer-label answerof-15655' value='60522' \/>&nbsp;<label for='answer-id-60522' id='answer-label-60522' class='js-answer-label answer label-4'><span class='answer'>STATISTICS_LEVEL=BASIC and CONTROL_MANAGEMENT_PACK ACCESS=DIAGOSTIC<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60523' \/><div class='watu-question-choice'><input type='radio' name='answer-15655[]' id='answer-id-60523' class='answer answer-4 js-answer-label answerof-15655' value='60523' \/>&nbsp;<label for='answer-id-60523' id='answer-label-60523' class='js-answer-label answer label-4'><span class='answer'>STATISTICS_LEVEL=TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS-<br \/>DIAGOSTIC*TUNING<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60524' \/><div class='watu-question-choice'><input type='radio' name='answer-15655[]' id='answer-id-60524' class='answer answer-4 js-answer-label answerof-15655' value='60524' \/>&nbsp;<label for='answer-id-60524' id='answer-label-60524' class='js-answer-label answer label-4'><span class='answer'>STATISTICS_LEVEL=TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS=DIAGOSTIC<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Monitoring of Database Operations requires that the STATISTICS_LEVEL parameter be set to ALL and CONTROL_MANAGEMENT_PACK_ACCESS be set to DIAGNOSTIC+TUNING. These settings enable all the advisory features and automatic tuning features within the Oracle Database, including the Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the full functionality of the SQL Tuning Advisor and SQL Access Advisor, which are components of the Diagnostic and Tuning packs.<br\/>* STATISTICS_LEVEL=ALL: This setting enables the collection of all system statistics for problem detection and self-tuning purposes.<br\/>* CONTROL_MANAGEMENT_PACK_ACCESS=DIAGNOSTIC+TUNING: This grants access to both the Diagnostic Pack and the Tuning Pack, which are essential for detailed performance monitoring and tuning capabilities.<br\/>References:<br\/>* Oracle Database Reference: STATISTICS_LEVEL<br\/>* Oracle Database Licensing Information User Manual: Oracle Database Management Packs<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(4,this)' id='btn-4' value='See Answer'  \/><input type='hidden' id='questionType4' value='radio' class=''><\/div><div class='watu-question' id='question-5'><div class='question-content'><p><strong>NEW QUESTION 28<\/strong><br \/>You must configure and enable Database Smart Flash Cache for a database.<br \/>You configure these flash devices:<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-ad4fc01921a756fb0f50c1205fac7640.jpg\"\/><br \/>Examine these parameter settings:<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-1a051bd5dfcca1d4ef95eebebd3cb3c9.jpg\"\/><br \/>What must be configured so that the database uses these devices for the Database Smart Flash Cache?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15656' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60525' \/><div class='watu-question-choice'><input type='radio' name='answer-15656[]' id='answer-id-60525' class='answer answer-5 js-answer-label answerof-15656' value='60525' \/>&nbsp;<label for='answer-id-60525' id='answer-label-60525' class='js-answer-label answer label-5'><span class='answer'>Set DB_FLASH_CACHE_SIZE to 192G and MEMORY_TARGET to 256G.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60526' \/><div class='watu-question-choice'><input type='radio' name='answer-15656[]' id='answer-id-60526' class='answer answer-5 js-answer-label answerof-15656' value='60526' \/>&nbsp;<label for='answer-id-60526' id='answer-label-60526' class='js-answer-label answer label-5'><span class='answer'>Set DB_FLASH_CACHE_SIZE parameter to 192G.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60527' \/><div class='watu-question-choice'><input type='radio' name='answer-15656[]' id='answer-id-60527' class='answer answer-5 js-answer-label answerof-15656' value='60527' \/>&nbsp;<label for='answer-id-60527' id='answer-label-60527' class='js-answer-label answer label-5'><span class='answer'>Disable Automatic Memory Management and set SGA_TARGET to 256G.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60528' \/><div class='watu-question-choice'><input type='radio' name='answer-15656[]' id='answer-id-60528' class='answer answer-5 js-answer-label answerof-15656' value='60528' \/>&nbsp;<label for='answer-id-60528' id='answer-label-60528' class='js-answer-label answer label-5'><span class='answer'>Set DB_FLASH_CACHE_SIZE to 256G and change device \/dev\/sdk to 128G.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60529' \/><div class='watu-question-choice'><input type='radio' name='answer-15656[]' id='answer-id-60529' class='answer answer-5 php-answer-label answerof-15656' value='60529' \/>&nbsp;<label for='answer-id-60529' id='answer-label-60529' class='php-answer-label answer label-5'><span class='answer'>Set DB_FLASH_CACHE_SIZE parameter to 128G, 64G.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>To configure and enable Database Smart Flash Cache, you must set the DB_FLASH_CACHE_SIZE parameter to reflect the combined size of the flash devices you intend to use for the cache. In this scenario, two flash devices are configured: \/dev\/sdj with 128G and \/dev\/sdk with 64G.<br\/>* Determine the combined size of the flash devices intended for the Database Smart Flash Cache. In this case, it&#8217;s 128G + 64G = 192G.<br\/>* However, Oracle documentation suggests setting DB_FLASH_CACHE_SIZE to the exact sizes of the individual devices, separated by a comma when multiple devices are used.<br\/>* Modify the parameter in the database initialization file (init.ora or spfile.ora) or using an ALTER SYSTEM command. Here&#8217;s the command for altering the system setting:<br\/>ALTER SYSTEM SET DB_FLASH_CACHE_SIZE=&#8217;128G,64G&#8217; SCOPE=SPFILE;<br\/>* Since this is a static parameter, a database restart is required for the changes to take effect.<br\/>* Upon database startup, it will allocate the Database Smart Flash Cache using the provided sizes for the specified devices.<br\/>It is important to note that MEMORY_TARGET and MEMORY_MAX_TARGET parameters should be configured independently of DB_FLASH_CACHE_SIZE. They control the Oracle memory management for the SGA and PGA, and do not directly correlate with the flash cache configuration.<br\/>References<br\/>* Oracle Database 19c Documentation on Database Smart Flash Cache<br\/>* Oracle Support Articles and Community Discussions on DB_FLASH_CACHE_SIZE Configuration<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(5,this)' id='btn-5' value='See Answer'  \/><input type='hidden' id='questionType5' value='radio' class=''><\/div><div class='watu-question' id='question-6'><div class='question-content'><p><strong>NEW QUESTION 29<\/strong><br \/>You use SQL Tuning Advisor to tune a given SQL statement.<br \/>The analysis eventually results in the implementation of a SQL Profile.<br \/>You then generate the new SQL Profile plan and enforce it using a SQL PlanBaselinebut forget to disable the SQLProfile and a few days later you find out that the SQL Profile is generating a new execution plan.<br \/>Which two statements are true?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15657' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60530' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15657[]' id='answer-id-60530' class='answer answer-6 js-answer-label answerof-15657' value='60530' \/>&nbsp;<label for='answer-id-60530' id='answer-label-60530' class='js-answer-label answer label-6'><span class='answer'>The existence of two concurrent plan stability methods generates a child cursor for every execution.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60531' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15657[]' id='answer-id-60531' class='answer answer-6 js-answer-label answerof-15657' value='60531' \/>&nbsp;<label for='answer-id-60531' id='answer-label-60531' class='js-answer-label answer label-6'><span class='answer'>The SQL Profiles as well as SQL Plan Baseline are implemented using hints, so they both generate the same plan.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60532' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15657[]' id='answer-id-60532' class='answer answer-6 php-answer-label answerof-15657' value='60532' \/>&nbsp;<label for='answer-id-60532' id='answer-label-60532' class='php-answer-label answer label-6'><span class='answer'>The execution plan is the one enforced by the SQL Profile.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60533' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15657[]' id='answer-id-60533' class='answer answer-6 js-answer-label answerof-15657' value='60533' \/>&nbsp;<label for='answer-id-60533' id='answer-label-60533' class='js-answer-label answer label-6'><span class='answer'>The execution plan is the one enforced by the SQL Plan Baseline.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60534' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15657[]' id='answer-id-60534' class='answer answer-6 php-answer-label answerof-15657' value='60534' \/>&nbsp;<label for='answer-id-60534' id='answer-label-60534' class='php-answer-label answer label-6'><span class='answer'>The SQL Plan Baseline must be accepted in order to be used for the execution plan.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60535' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15657[]' id='answer-id-60535' class='answer answer-6 js-answer-label answerof-15657' value='60535' \/>&nbsp;<label for='answer-id-60535' id='answer-label-60535' class='js-answer-label answer label-6'><span class='answer'>The conflict between the two plan stability methods results in an error.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>When both a SQL Profile and a SQL Plan Baseline are in place, the SQL Profile has a stronger preference and the optimizer is more likely to choose the execution plan from the SQL Profile.<br\/>C: A SQL Profile is generally more influential than a SQL Plan Baseline because it contains additional statistics and directives that help the optimizer to generate a more efficient execution plan. If both exist, the optimizer will use the profile&#8217;s plan unless the baseline&#8217;s plan is proven to be better through the SQL performance monitoring process.<br\/>E: SQL Plan Baselines must be accepted before they can be used by the optimizer. If a SQL Plan Baseline is not accepted, it will not be considered for generating the execution plan. Therefore, the presence of an unaccepted SQL Plan Baseline will not automatically force the optimizer to use its plan.<br\/>References:<br\/>* Oracle Database SQL Tuning Guide, 19c<br\/>* Oracle Database Administrator&#8217;s Guide, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(6,this)' id='btn-6' value='See Answer'  \/><input type='hidden' id='questionType6' value='checkbox' class=''><\/div><div class='watu-question' id='question-7'><div class='question-content'><p><strong>NEW QUESTION 30<\/strong><br \/>Which two statements are true about the use and monitoring of Buffer Cache Hit ratios and their value in tuning Database I\/O performance?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15658' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60536' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15658[]' id='answer-id-60536' class='answer answer-7 js-answer-label answerof-15658' value='60536' \/>&nbsp;<label for='answer-id-60536' id='answer-label-60536' class='js-answer-label answer label-7'><span class='answer'>The performance of workloads that primarily generate full table scans and fast full index scans are always affected by the cache hit ratio.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60537' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15658[]' id='answer-id-60537' class='answer answer-7 php-answer-label answerof-15658' value='60537' \/>&nbsp;<label for='answer-id-60537' id='answer-label-60537' class='php-answer-label answer label-7'><span class='answer'>A 99% cache hit ratio can be observed for database instances which have very poor I\/O performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60538' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15658[]' id='answer-id-60538' class='answer answer-7 php-answer-label answerof-15658' value='60538' \/>&nbsp;<label for='answer-id-60538' id='answer-label-60538' class='php-answer-label answer label-7'><span class='answer'>The buffer cache advisory view v$db_cache_advice provides advice on cache hit ratios appropriate for the instance workload.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60539' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15658[]' id='answer-id-60539' class='answer answer-7 js-answer-label answerof-15658' value='60539' \/>&nbsp;<label for='answer-id-60539' id='answer-label-60539' class='js-answer-label answer label-7'><span class='answer'>Both the RECYCLE and KEEP buffer caches should always have a very high cache hit ratio.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60540' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15658[]' id='answer-id-60540' class='answer answer-7 js-answer-label answerof-15658' value='60540' \/>&nbsp;<label for='answer-id-60540' id='answer-label-60540' class='js-answer-label answer label-7'><span class='answer'>A 60% cache hit ratio can be observed for database instances which have very good I\/O performance.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>A high buffer cache hit ratio typically indicates that the database is effectively using the buffer cache and does not often need to read data from disk. However, this metric alone is not a reliable indicator of the I\/O performance of the database for several reasons:<br\/>* Full table scans and fast full index scans (A) can bypass the buffer cache by design if the blocks are not deemed reusable shortly, which can impact the cache hit ratio.<br\/>* A high cache hit ratio (B) can be misleading if the database performance is poor due to other factors, such as inefficient queries or contention issues.<br\/>* The buffer cache advisory (C) is a more valuable tool for understanding the potential impact of different cache sizes on the database&#8217;s I\/O performance. It simulates scenarios with different cache sizes and provides a more targeted recommendation.<br\/>* The RECYCLE and KEEP buffer caches (D) are specialized caches designed for certain scenarios.<br\/>While high hit ratios can be beneficial, they are not universally required; some workloads might not be significantly impacted by lower hit ratios in these caches.<br\/>* A lower cache hit ratio (E) does not necessarily mean poor I\/O performance. In some cases, a system with a well-designed storage subsystem and efficient queries might perform well even with a lower cache hit ratio.<br\/>References<br\/>* Oracle Database 19c Performance Tuning Guide &#8211; Buffer Cache Hit Ratio<br\/>* Oracle Database 19c Performance Tuning Guide &#8211; v$db_cache_advice<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(7,this)' id='btn-7' value='See Answer'  \/><input type='hidden' id='questionType7' value='checkbox' class=''><\/div><div class='watu-question' id='question-8'><div class='question-content'><p><strong>NEW QUESTION 31<\/strong><br \/>18. The application provider has given full indications regarding the procedure to collect statistics.<br \/>To reduce the space used in the SYSAUX tablespace, you want to prevent the optimizer statistics Advisor from running.<br \/>Which method will allow you to do this?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15659' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60541' \/><div class='watu-question-choice'><input type='radio' name='answer-15659[]' id='answer-id-60541' class='answer answer-8 js-answer-label answerof-15659' value='60541' \/>&nbsp;<label for='answer-id-60541' id='answer-label-60541' class='js-answer-label answer label-8'><span class='answer'>Set the parameter OPTIMIZER_ADAPTIVE_STATISTICS to FALSE.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60542' \/><div class='watu-question-choice'><input type='radio' name='answer-15659[]' id='answer-id-60542' class='answer answer-8 php-answer-label answerof-15659' value='60542' \/>&nbsp;<label for='answer-id-60542' id='answer-label-60542' class='php-answer-label answer label-8'><span class='answer'>Use DBMS_AUTO_TASK_ADMIN. DISABLE to disable the AUTO_STATS_ADVISOR_TASK task.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60543' \/><div class='watu-question-choice'><input type='radio' name='answer-15659[]' id='answer-id-60543' class='answer answer-8 js-answer-label answerof-15659' value='60543' \/>&nbsp;<label for='answer-id-60543' id='answer-label-60543' class='js-answer-label answer label-8'><span class='answer'>Set the AUTO_STATS_ADVISOR_TASK global statistics preference to FALSE.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60544' \/><div class='watu-question-choice'><input type='radio' name='answer-15659[]' id='answer-id-60544' class='answer answer-8 js-answer-label answerof-15659' value='60544' \/>&nbsp;<label for='answer-id-60544' id='answer-label-60544' class='js-answer-label answer label-8'><span class='answer'>Use DBMS STATS.DROP ADVISOR TASK to drop the AUTO_STATS_ADVISOR_TASK task.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The Oracle Optimizer statistics advisor, which is part of the automated tasks framework, can be disabled using the DBMS_AUTO_TASK_ADMIN package. This will prevent it fromrunning and thus reduce space usage in the SYSAUX tablespace.References:<br\/>* Oracle Database PL\/SQL Packages and Types Reference, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(8,this)' id='btn-8' value='See Answer'  \/><input type='hidden' id='questionType8' value='radio' class=''><\/div><div class='watu-question' id='question-9'><div class='question-content'><p><strong>NEW QUESTION 32<\/strong><br \/>Examine this code block, which executes successfully:<br \/>DBMS_SERVER_ALERT. SET_THRESHOLD (<br \/>DBMS_SERVER_ALERT.CPU_TIME_PER_CALL, DBMS_SERVER_ALERT. OPERATOR_GE, &#8216;8000&#8217;, DBMS_SERVER_ALERT.OPERATOR_GE, &#8216;10000&#8217;, 1, 2, &#8216;inst1&#8217;, DBMS_SERVER_ALERT.OBJECT_TYPE_SERVICE, &#8216;main.regress.rdbms.dev.us.example.com&#8217;) ;<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-5528633b17232ebe525958c1f9be866b.jpg\"\/><br \/>What will happen?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15660' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60545' \/><div class='watu-question-choice'><input type='radio' name='answer-15660[]' id='answer-id-60545' class='answer answer-9 js-answer-label answerof-15660' value='60545' \/>&nbsp;<label for='answer-id-60545' id='answer-label-60545' class='js-answer-label answer label-9'><span class='answer'>A warning alert will be issued when CPU time exceeds 1 minute for each user call.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60546' \/><div class='watu-question-choice'><input type='radio' name='answer-15660[]' id='answer-id-60546' class='answer answer-9 php-answer-label answerof-15660' value='60546' \/>&nbsp;<label for='answer-id-60546' id='answer-label-60546' class='php-answer-label answer label-9'><span class='answer'>A critical alert will be issued when CPU time exceeds 10000 microseconds for each user call.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60547' \/><div class='watu-question-choice'><input type='radio' name='answer-15660[]' id='answer-id-60547' class='answer answer-9 js-answer-label answerof-15660' value='60547' \/>&nbsp;<label for='answer-id-60547' id='answer-label-60547' class='js-answer-label answer label-9'><span class='answer'>A warning alert will be issued only when CPU time exceeds 10000 microseconds for each user call.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60548' \/><div class='watu-question-choice'><input type='radio' name='answer-15660[]' id='answer-id-60548' class='answer answer-9 js-answer-label answerof-15660' value='60548' \/>&nbsp;<label for='answer-id-60548' id='answer-label-60548' class='js-answer-label answer label-9'><span class='answer'>A critical alert will be issued when CPU time exceeds 2 minutes for each user call.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>In the provided code block, theDBMS_SERVER_ALERT.SET_THRESHOLDprocedure is used to set alert thresholds for the CPU time per call in Oracle Database. This procedure is a part of Oracle&#8217;s Database Server Alert system, which monitors various metrics and generates alerts when certain thresholds are exceeded.<br\/>The parameters passed to theSET_THRESHOLDprocedure are as follows:<br\/>* The first parameterDBMS_SERVER_ALERT.CPU_TIME_PER_CALLspecifies the metric for which the threshold is being set, in this case, the CPU time consumed per database call.<br\/>* The second and third parametersDBMS_SERVER_ALERT.OPERATOR_GEand&#8217;8000&#8217;specify the warning threshold level and its value, respectively. However, these are not relevant to the answer as they are overridden by the critical threshold settings.<br\/>* The fourth and fifth parametersDBMS_SERVER_ALERT.OPERATOR_GEand&#8217;10000&#8217;set the critical threshold level and its value. This means that a critical alert will be generated when the CPU time per call exceeds 10000 microseconds.<br\/>* The remaining parameters specify the warning and critical alert intervals, the instance name, the object type, and the service name. These are not directly relevant to the behavior described in the options.<br\/>Thus, the correct answer is B, as the critical threshold for CPU time per call is set to 10000 microseconds, and the system is configured to issue a critical alert when this threshold is exceeded.<br\/>References:<br\/>* Oracle Database 19c documentation on theDBMS_SERVER_ALERT.SET_THRESHOLDprocedure, which details the parameters and usage of this procedure for setting alert thresholds within Oracle Database monitoring system.<br\/>* Oracle Database Performance Tuning Guide, which provides best practices and methodologies for monitoring and tuning Oracle Database performance, including the use of server alerts and thresholds.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(9,this)' id='btn-9' value='See Answer'  \/><input type='hidden' id='questionType9' value='radio' class=''><\/div><div class='watu-question' id='question-10'><div class='question-content'><p><strong>NEW QUESTION 33<\/strong><br \/>Which two statements are true about the use and monitoring of Buffer Cache Hit ratios and their value in tuning Database I\/O performance?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15661' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60549' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15661[]' id='answer-id-60549' class='answer answer-10 php-answer-label answerof-15661' value='60549' \/>&nbsp;<label for='answer-id-60549' id='answer-label-60549' class='php-answer-label answer label-10'><span class='answer'>A 99% cache hit ratio can be observed for database instances which have very poor I\/O performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60550' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15661[]' id='answer-id-60550' class='answer answer-10 js-answer-label answerof-15661' value='60550' \/>&nbsp;<label for='answer-id-60550' id='answer-label-60550' class='js-answer-label answer label-10'><span class='answer'>A 60% cache hit ratio can be observed for database instances which have very good I\/O performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60551' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15661[]' id='answer-id-60551' class='answer answer-10 js-answer-label answerof-15661' value='60551' \/>&nbsp;<label for='answer-id-60551' id='answer-label-60551' class='js-answer-label answer label-10'><span class='answer'>The performance of workloads that primarily generate full table scans and fast full index scans are always affected by the cache hit ratio.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60552' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15661[]' id='answer-id-60552' class='answer answer-10 php-answer-label answerof-15661' value='60552' \/>&nbsp;<label for='answer-id-60552' id='answer-label-60552' class='php-answer-label answer label-10'><span class='answer'>The buffer cache advisory view v$db_cache_advice provides advice on cache hit ratios appropriate for the instance workload.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60553' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15661[]' id='answer-id-60553' class='answer answer-10 js-answer-label answerof-15661' value='60553' \/>&nbsp;<label for='answer-id-60553' id='answer-label-60553' class='js-answer-label answer label-10'><span class='answer'>Both the RECYCLE and KEEP buffer caches should always have a very high cache hit ratio.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'><\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(10,this)' id='btn-10' value='See Answer'  \/><input type='hidden' id='questionType10' value='checkbox' class=''><\/div><div class='watu-question' id='question-11'><div class='question-content'><p><strong>NEW QUESTION 34<\/strong><br \/>Which two options are part of a Soft Parse operation?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15662' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60554' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15662[]' id='answer-id-60554' class='answer answer-11 php-answer-label answerof-15662' value='60554' \/>&nbsp;<label for='answer-id-60554' id='answer-label-60554' class='php-answer-label answer label-11'><span class='answer'>Syntax Check<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60555' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15662[]' id='answer-id-60555' class='answer answer-11 js-answer-label answerof-15662' value='60555' \/>&nbsp;<label for='answer-id-60555' id='answer-label-60555' class='js-answer-label answer label-11'><span class='answer'>SQL Row Source Generation<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60556' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15662[]' id='answer-id-60556' class='answer answer-11 js-answer-label answerof-15662' value='60556' \/>&nbsp;<label for='answer-id-60556' id='answer-label-60556' class='js-answer-label answer label-11'><span class='answer'>SQL Optimization<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60557' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15662[]' id='answer-id-60557' class='answer answer-11 js-answer-label answerof-15662' value='60557' \/>&nbsp;<label for='answer-id-60557' id='answer-label-60557' class='js-answer-label answer label-11'><span class='answer'>Shared Pool Memory Allocation<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60558' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15662[]' id='answer-id-60558' class='answer answer-11 php-answer-label answerof-15662' value='60558' \/>&nbsp;<label for='answer-id-60558' id='answer-label-60558' class='php-answer-label answer label-11'><span class='answer'>Semantic Check<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>What is a Soft Parse?<br\/>A Soft Parse occurs when a SQL statement is already present in the shared SQL area (Shared Pool) of the database. Instead of recreating the execution plan, Oracle reuses the existing plan, making the process much faster and more efficient. This is an essential optimization step in Oracle Database to reduce overhead and improve performance.<br\/>Steps Involved in a Soft Parse<br\/>* Syntax Check (Step A)<br\/>* This is the first step of the parsing process.<br\/>* Purpose: Ensures the SQL statement conforms to proper syntax rules defined by the SQL language.<br\/>* Example:<br\/>SELECT FROM employees;<br\/>This query will fail at the Syntax Check step because it doesn&#8217;t specify any columns to retrieve. Oracle ensures that such malformed queries are identified early.<br\/>* Semantic Check (Step E)<br\/>* The Semantic Check happens after the Syntax Check if the statement passes the syntax validation.<br\/>* Purpose:<br\/>* Verify Object Existence: Check if all referenced tables, columns, and other database objects exist. Example:<br\/>SELECT salary FROM non_existent_table;<br\/>This query will fail because the table non_existent_table does not exist.<br\/>* User Privileges: Ensure the user has sufficient permissions to access the objects. Example:<br\/>SELECT * FROM employees;<br\/>If the user doesn&#8217;t have SELECT privileges on the employees table, the query will fail.<br\/>* Validate Data Types: Ensure that columns used in expressions or comparisons are compatible in terms of data types. Example:<br\/>SELECT * FROM employees WHERE hire_date = &#8217;01-01-2023&#8242;;<br\/>If hire_date is stored as a DATE type, and the literal is not implicitly convertible, this will fail.<br\/>Steps Skipped in a Soft Parse<br\/>SQL Row Source Generation (Option B):<br\/>This step involves breaking the query into operations (row sources) to fetch data. It is part of execution plan generation, which happens only during a Hard Parse.<br\/>SQL Optimization (Option C):<br\/>The SQL Optimizer calculates the most efficient execution plan during a hard parse. In a soft parse, the existing plan is reused, so this step is skipped.<br\/>Shared Pool Memory Allocation (Option D):<br\/>A Hard Parse allocates memory in the shared pool for a new SQL statement. In a soft parse, Oracle reuses the existing shared memory, avoiding additional allocation.<br\/>Why Are Syntax Check and Semantic Check the Correct Steps?<br\/>These steps are mandatory validations for all SQL statements, even during a soft parse. Without them, Oracle would risk executing invalid or unauthorized SQL statements.<br\/>By reusing the execution plan but performing these lightweight checks, Oracle ensures both efficiency and correctness.<br\/>References to Oracle Database 19c: Performance Management and Tuning<br\/>Oracle Documentation:<br\/>Oracle Database 19c Concepts: SQL Parsing and Execution<br\/>Oracle Database Performance Tuning Guide: Understanding Hard Parses and Soft Parses Key Features Discussed in the Guide:<br\/>Shared Pool and Library Cache: The role of the shared SQL area in reducing parsing overhead.<br\/>SQL Execution Workflow: Detailed explanation of syntax and semantic checks.<br\/>SQL Optimizer: The differences between hard and soft parsing in relation to the optimizer.<br\/>Tools for Analysis:<br\/>AWR Reports: Monitor the number of hard vs. soft parses for query performance.<br\/>V$SQL: View cached SQL statements and their parsing statistics.<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(11,this)' id='btn-11' value='See Answer'  \/><input type='hidden' id='questionType11' value='checkbox' class=''><\/div><div class='watu-question' id='question-12'><div class='question-content'><p><strong>NEW QUESTION 35<\/strong><br \/>Examine these commands, which execute successfully:<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-ee67c5b4d0473165212094e01513a6d2.jpg\"\/><br \/>Which statement is true?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15663' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60559' \/><div class='watu-question-choice'><input type='radio' name='answer-15663[]' id='answer-id-60559' class='answer answer-12 js-answer-label answerof-15663' value='60559' \/>&nbsp;<label for='answer-id-60559' id='answer-label-60559' class='js-answer-label answer label-12'><span class='answer'>AD DM is enabled for all pluggable databases.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60560' \/><div class='watu-question-choice'><input type='radio' name='answer-15663[]' id='answer-id-60560' class='answer answer-12 js-answer-label answerof-15663' value='60560' \/>&nbsp;<label for='answer-id-60560' id='answer-label-60560' class='js-answer-label answer label-12'><span class='answer'>ADDM, AWR, and ASH reports can be purged automatically.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60561' \/><div class='watu-question-choice'><input type='radio' name='answer-15663[]' id='answer-id-60561' class='answer answer-12 js-answer-label answerof-15663' value='60561' \/>&nbsp;<label for='answer-id-60561' id='answer-label-60561' class='js-answer-label answer label-12'><span class='answer'>AWR- snapshots in all pluggable databases will be purgedautomatically after every 60 mins.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60562' \/><div class='watu-question-choice'><input type='radio' name='answer-15663[]' id='answer-id-60562' class='answer answer-12 php-answer-label answerof-15663' value='60562' \/>&nbsp;<label for='answer-id-60562' id='answer-label-60562' class='php-answer-label answer label-12'><span class='answer'>AWR snapshots can be purged manually in pluggable databases.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>TheDBMS_WORKLOAD_REPOSITORY.MODIFY_SNAPSHOT_SETTINGSprocedure allows setting attributes related to AWR snapshots. While the interval setting controls the frequency of snapshot generation, purging them is a separate process that can be managed either automatically (with retention settings) or manually.References:<br\/>* Oracle Database PL\/SQL Packages and Types Reference, 19c<br\/>* Oracle Multitenant Administrator&#8217;s Guide, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(12,this)' id='btn-12' value='See Answer'  \/><input type='hidden' id='questionType12' value='radio' class=''><\/div><div class='watu-question' id='question-13'><div class='question-content'><p><strong>NEW QUESTION 36<\/strong><br \/>You need to collect and aggregate statistics for the ACCTG service and PAYROLL module, and execute:<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-0d497d911de82a6b855868adb76d77ea.jpg\"\/><br \/>Where do you find the output of this command?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15664' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60563' \/><div class='watu-question-choice'><input type='radio' name='answer-15664[]' id='answer-id-60563' class='answer answer-13 php-answer-label answerof-15664' value='60563' \/>&nbsp;<label for='answer-id-60563' id='answer-label-60563' class='php-answer-label answer label-13'><span class='answer'>By viewing V$SERV_MOD_ACT_STATS<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60564' \/><div class='watu-question-choice'><input type='radio' name='answer-15664[]' id='answer-id-60564' class='answer answer-13 js-answer-label answerof-15664' value='60564' \/>&nbsp;<label for='answer-id-60564' id='answer-label-60564' class='js-answer-label answer label-13'><span class='answer'>In $ORACLE_BASE\/diag\/rdbms\/&lt;db unique name&gt;\/&lt;instance name&gt;\/trace<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60565' \/><div class='watu-question-choice'><input type='radio' name='answer-15664[]' id='answer-id-60565' class='answer answer-13 js-answer-label answerof-15664' value='60565' \/>&nbsp;<label for='answer-id-60565' id='answer-label-60565' class='js-answer-label answer label-13'><span class='answer'>By viewing V$SERVICE_STATS<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60566' \/><div class='watu-question-choice'><input type='radio' name='answer-15664[]' id='answer-id-60566' class='answer answer-13 js-answer-label answerof-15664' value='60566' \/>&nbsp;<label for='answer-id-60566' id='answer-label-60566' class='js-answer-label answer label-13'><span class='answer'>In the current working directory<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>When you enable statistics gathering for a specific service and module using DBMS_MONITOR.SERV_MOD_ACT_STAT_ENABLE, the output is aggregated and can be viewed using theV$SERV_MOD_ACT_STATSdynamic performance view. This view contains the cumulative statistics of database activity broken down by service and module, which is exactly what you collect when executing the provided command.<br\/>* B (Incorrect):While many types of trace files are located in the Diagnostic Destination directory (<br\/>$ORACLE_BASE\/diag), the aggregated statistics for services and modules are not written to trace files but are instead viewable through dynamic performance views.<br\/>* C (Incorrect):TheV$SERVICE_STATSview provides service-level statistics but does not provide the<br\/>* combined service\/module-level breakdown.<br\/>* D (Incorrect):The output of the PL\/SQL block is not written to a file in the current working directory; it is stored in the data dictionary and accessible via dynamic performance views.<br\/>References:<br\/>* Oracle Database PL\/SQL Packages and Types Reference:DBMS_MONITOR<br\/>* Oracle Database Reference:V$SERV_MOD_ACT_STATS<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(13,this)' id='btn-13' value='See Answer'  \/><input type='hidden' id='questionType13' value='radio' class=''><\/div><div class='watu-question' id='question-14'><div class='question-content'><p><strong>NEW QUESTION 37<\/strong><br \/>You must write a statement that returns the ten most recent sales. Examine this statement:<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-f60faa369c305b60c961d0ca4d15150a.jpg\"\/><br \/>Users complain that the query executes too slowly. Examine the statement&#8217;s current execution plan:<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-02d74acb0602cbd2e0572d9b6ddefa1c.jpg\"\/><br \/>What must you do to reduce the execution time and why?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15665' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60567' \/><div class='watu-question-choice'><input type='radio' name='answer-15665[]' id='answer-id-60567' class='answer answer-14 php-answer-label answerof-15665' value='60567' \/>&nbsp;<label for='answer-id-60567' id='answer-label-60567' class='php-answer-label answer label-14'><span class='answer'>Create an index on SALES.TIME_ID to force the return of rows in the order specified by the ORDER BY clause.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60568' \/><div class='watu-question-choice'><input type='radio' name='answer-15665[]' id='answer-id-60568' class='answer answer-14 js-answer-label answerof-15665' value='60568' \/>&nbsp;<label for='answer-id-60568' id='answer-label-60568' class='js-answer-label answer label-14'><span class='answer'>Replace the FETCH FIRST clause with ROWNUM to enable the use of an index on SALES.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60569' \/><div class='watu-question-choice'><input type='radio' name='answer-15665[]' id='answer-id-60569' class='answer answer-14 js-answer-label answerof-15665' value='60569' \/>&nbsp;<label for='answer-id-60569' id='answer-label-60569' class='js-answer-label answer label-14'><span class='answer'>Collect a new set of statistics on PRODUCT, CUSTOMERS, and SALES because the current stats are inaccurate.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60570' \/><div class='watu-question-choice'><input type='radio' name='answer-15665[]' id='answer-id-60570' class='answer answer-14 js-answer-label answerof-15665' value='60570' \/>&nbsp;<label for='answer-id-60570' id='answer-label-60570' class='js-answer-label answer label-14'><span class='answer'>Enable Adaptive Plans so that Oracle can change the Join method as well as the Join order for this query.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60571' \/><div class='watu-question-choice'><input type='radio' name='answer-15665[]' id='answer-id-60571' class='answer answer-14 js-answer-label answerof-15665' value='60571' \/>&nbsp;<label for='answer-id-60571' id='answer-label-60571' class='js-answer-label answer label-14'><span class='answer'>Create an index on SALES.CUST_ID to force an INDEX RANGE SCAN on this index followed by a NESTED LOOP join between CUSTOMERS and SALES.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The execution plan shows a full table access for the SALES table. To reduce the execution time, creating an index on SALES.TIME_ID would be beneficial as it would allow the database to quickly sort and retrieve the most recent sales without the need to perform a full table scan, which is I\/O intensive and slower. By indexing TIME_ID, which is used in the ORDER BY clause, the optimizer can take advantage of the index to efficiently sort and limit the result set to the ten most recent sales.<br\/>* B (Incorrect): Replacing FETCH FIRST with ROWNUM would not necessarily improve the performance unless there is an appropriate index that the optimizer can use to avoid sorting the entire result set.<br\/>* C (Incorrect): There is no indication that the current statistics are inaccurate; hence, collecting new statistics may not lead to performance improvement.<br\/>* D (Incorrect): While adaptive plans can provide performance benefits by allowing the optimizer to adapt the execution strategy, the main issue here is the lack of an index on the ORDER BY column.<br\/>* E (Incorrect): Creating an index on SALES.CUST_ID could improve join performance but would not address the performance issue caused by the lack of an index on the ORDER BY column.<br\/>References:<br\/>* Oracle Database SQL Tuning Guide: Managing Indexes<br\/>* Oracle Database SQL Tuning Guide: Using Indexes and Clusters<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(14,this)' id='btn-14' value='See Answer'  \/><input type='hidden' id='questionType14' value='radio' class=''><\/div><div class='watu-question' id='question-15'><div class='question-content'><p><strong>NEW QUESTION 38<\/strong><br \/>Which Optimizer component helps decide whether to use a nested loop join or a hash join in an adaptive execution plan?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15666' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60572' \/><div class='watu-question-choice'><input type='radio' name='answer-15666[]' id='answer-id-60572' class='answer answer-15 js-answer-label answerof-15666' value='60572' \/>&nbsp;<label for='answer-id-60572' id='answer-label-60572' class='js-answer-label answer label-15'><span class='answer'>Statistics Feedback<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60573' \/><div class='watu-question-choice'><input type='radio' name='answer-15666[]' id='answer-id-60573' class='answer answer-15 js-answer-label answerof-15666' value='60573' \/>&nbsp;<label for='answer-id-60573' id='answer-label-60573' class='js-answer-label answer label-15'><span class='answer'>SQL Plan Directives<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60574' \/><div class='watu-question-choice'><input type='radio' name='answer-15666[]' id='answer-id-60574' class='answer answer-15 php-answer-label answerof-15666' value='60574' \/>&nbsp;<label for='answer-id-60574' id='answer-label-60574' class='php-answer-label answer label-15'><span class='answer'>Statistics Collector<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60575' \/><div class='watu-question-choice'><input type='radio' name='answer-15666[]' id='answer-id-60575' class='answer answer-15 js-answer-label answerof-15666' value='60575' \/>&nbsp;<label for='answer-id-60575' id='answer-label-60575' class='js-answer-label answer label-15'><span class='answer'>Automatic Reoptimization<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60576' \/><div class='watu-question-choice'><input type='radio' name='answer-15666[]' id='answer-id-60576' class='answer answer-15 js-answer-label answerof-15666' value='60576' \/>&nbsp;<label for='answer-id-60576' id='answer-label-60576' class='js-answer-label answer label-15'><span class='answer'>Dynamic Statistics<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>In an adaptive execution plan, the Optimizer makes runtime decisions between nested loop and hash joins using a statistics collector. The collector is a row source that collects statistics about the rows it processes and can adapt the plan based on the number of rows processed.<br\/>References:<br\/>* Oracle Database SQL Tuning Guide, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(15,this)' id='btn-15' value='See Answer'  \/><input type='hidden' id='questionType15' value='radio' class=''><\/div><div class='watu-question' id='question-16'><div class='question-content'><p><strong>NEW QUESTION 39<\/strong><br \/>An Oracle 19c database uses default values for all optimizer initialization parameters.<br \/>After a table undergoes partition maintenance, a large number of wait events occur for:<br \/>cursor: pin S wait on X<br \/>Which command reduces the number of these wait events?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15667' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60577' \/><div class='watu-question-choice'><input type='radio' name='answer-15667[]' id='answer-id-60577' class='answer answer-16 js-answer-label answerof-15667' value='60577' \/>&nbsp;<label for='answer-id-60577' id='answer-label-60577' class='js-answer-label answer label-16'><span class='answer'>ALTER SYSTEM SET CURSOR_SHARING = FORCE;<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60578' \/><div class='watu-question-choice'><input type='radio' name='answer-15667[]' id='answer-id-60578' class='answer answer-16 js-answer-label answerof-15667' value='60578' \/>&nbsp;<label for='answer-id-60578' id='answer-label-60578' class='js-answer-label answer label-16'><span class='answer'>ALTER SYSTEM SET CURSOR_SPACE_FOR_TIME &#8211; TRUE;<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60579' \/><div class='watu-question-choice'><input type='radio' name='answer-15667[]' id='answer-id-60579' class='answer answer-16 php-answer-label answerof-15667' value='60579' \/>&nbsp;<label for='answer-id-60579' id='answer-label-60579' class='php-answer-label answer label-16'><span class='answer'>ALTER SYSTEM SET CURSOR_INVALIDATION = DEFERRED;<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60580' \/><div class='watu-question-choice'><input type='radio' name='answer-15667[]' id='answer-id-60580' class='answer answer-16 js-answer-label answerof-15667' value='60580' \/>&nbsp;<label for='answer-id-60580' id='answer-label-60580' class='js-answer-label answer label-16'><span class='answer'>ALTER SYSTEM SET SESSION CACHED CURSORS = 500;<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The cursor: pin S wait on X wait event suggests contention for a cursor pin, which is associated with mutexes (a type of locking mechanism) that protect the library cache to prevent concurrent modifications.<br\/>This issue can often be alleviated by deferring the invalidation of cursors until the end of the call to reduce contention. The correct command to use would be:<br\/>* C (Correct): ALTER SYSTEM SET CURSOR_INVALIDATION=DEFERRED; This setting defers the invalidation of dependent cursors until the end of the PL\/SQL call, which can reduce the cursor: pin S wait on X wait events.<br\/>The other options are incorrect in addressing this issue:<br\/>* A (Incorrect): Setting CURSOR_SHARING to FORCE makes the optimizer replace literal values with bind variables. It doesn&#8217;t address the contention for cursor pins directly.<br\/>* B (Incorrect): CURSOR_SPACE_FOR_TIME=TRUE aims to reduce the parsing effort by keeping cursors for prepared statements open. It may increase memory usage but does not directly resolve cursor: pin S wait on X waits.<br\/>* D (Incorrect): Increasing SESSION_CACHED_CURSORS caches more session cursors but doesn&#8217;t necessarily prevent the contention indicated by the cursor: pin S wait on X wait events.<br\/>References:<br\/>* Oracle Database Reference: CURSOR_INVALIDATION<br\/>* Oracle Database Performance Tuning Guide: Reducing Cursor Invalidation<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(16,this)' id='btn-16' value='See Answer'  \/><input type='hidden' id='questionType16' value='radio' class=''><\/div><div class='watu-question' id='question-17'><div class='question-content'><p><strong>NEW QUESTION 40<\/strong><br \/>Which two statements are true about session wait information contained in v$session or v$session_wait?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15668' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60581' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15668[]' id='answer-id-60581' class='answer answer-17 js-answer-label answerof-15668' value='60581' \/>&nbsp;<label for='answer-id-60581' id='answer-label-60581' class='js-answer-label answer label-17'><span class='answer'>Rows for sessions displaying WAITED UNKNOWN TIME in the STATE column indicate that the session is still waiting.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60582' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15668[]' id='answer-id-60582' class='answer answer-17 php-answer-label answerof-15668' value='60582' \/>&nbsp;<label for='answer-id-60582' id='answer-label-60582' class='php-answer-label answer label-17'><span class='answer'>Rows for sessions that are currently waiting have a wait time of 0.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60583' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15668[]' id='answer-id-60583' class='answer answer-17 php-answer-label answerof-15668' value='60583' \/>&nbsp;<label for='answer-id-60583' id='answer-label-60583' class='php-answer-label answer label-17'><span class='answer'>Rows for sessions that are not waiting might contain the actual wait time for the last event for which they waited.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60584' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15668[]' id='answer-id-60584' class='answer answer-17 js-answer-label answerof-15668' value='60584' \/>&nbsp;<label for='answer-id-60584' id='answer-label-60584' class='js-answer-label answer label-17'><span class='answer'>Rows for sessions that are currently waiting have their wait time incremented every microsecond.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60585' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15668[]' id='answer-id-60585' class='answer answer-17 js-answer-label answerof-15668' value='60585' \/>&nbsp;<label for='answer-id-60585' id='answer-label-60585' class='js-answer-label answer label-17'><span class='answer'>Rows for sessions that are not waiting always contain the total wait time since the session started.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>In theV$SESSIONview, Oracle provides information about the session waits:<br\/>B: When theWAIT_TIMEcolumn has a value of 0, it signifies that the session is currently waiting for a resource. This column represents the duration of the current or last wait.<br\/>C: If the session is not actively waiting, theWAIT_TIMEcolumn shows the time the session spent waiting for the last wait event. If theSTATEcolumn is showing &#8220;WAITED KNOWN TIME&#8221;, it means the session is not currently waiting, but it indicates the time for which it had waited.<br\/>References:<br\/>* Oracle Database Reference, 19c<br\/>* Oracle Database Performance Tuning Guide, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(17,this)' id='btn-17' value='See Answer'  \/><input type='hidden' id='questionType17' value='checkbox' class=''><\/div><div class='watu-question' id='question-18'><div class='question-content'><p><strong>NEW QUESTION 41<\/strong><br \/>Examine this statement and its corresponding execution plan:<br \/><img decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/uploads\/2025\/03\/1z0-084-79183a8083dcd4714f9e634e1e4f7306.jpg\"\/><br \/>Which phase introduces the CONCATENATION step?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15669' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60586' \/><div class='watu-question-choice'><input type='radio' name='answer-15669[]' id='answer-id-60586' class='answer answer-18 js-answer-label answerof-15669' value='60586' \/>&nbsp;<label for='answer-id-60586' id='answer-label-60586' class='js-answer-label answer label-18'><span class='answer'>SQL Semantic Check<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60587' \/><div class='watu-question-choice'><input type='radio' name='answer-15669[]' id='answer-id-60587' class='answer answer-18 js-answer-label answerof-15669' value='60587' \/>&nbsp;<label for='answer-id-60587' id='answer-label-60587' class='js-answer-label answer label-18'><span class='answer'>SQL Execution<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60588' \/><div class='watu-question-choice'><input type='radio' name='answer-15669[]' id='answer-id-60588' class='answer answer-18 js-answer-label answerof-15669' value='60588' \/>&nbsp;<label for='answer-id-60588' id='answer-label-60588' class='js-answer-label answer label-18'><span class='answer'>SQL Row Source Generation<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60589' \/><div class='watu-question-choice'><input type='radio' name='answer-15669[]' id='answer-id-60589' class='answer answer-18 php-answer-label answerof-15669' value='60589' \/>&nbsp;<label for='answer-id-60589' id='answer-label-60589' class='php-answer-label answer label-18'><span class='answer'>SQL Transformation<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60590' \/><div class='watu-question-choice'><input type='radio' name='answer-15669[]' id='answer-id-60590' class='answer answer-18 js-answer-label answerof-15669' value='60590' \/>&nbsp;<label for='answer-id-60590' id='answer-label-60590' class='js-answer-label answer label-18'><span class='answer'>SQL Adaptive Execution<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The CONCATENATION step in an execution plan is introduced during the SQL Transformation phase. This phase is part of the optimizer&#8217;s query transformations which can include various techniques to rewrite the query for more efficient execution. The CONCATENATION operation is used to combine the results of two separate SQL operations, typically when there is an OR condition in the WHERE clause, as seen in the provided query.<br\/>References:<br\/>* Oracle Database SQL Tuning Guide, 19c<br\/>* Oracle Database Concepts, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(18,this)' id='btn-18' value='See Answer'  \/><input type='hidden' id='questionType18' value='radio' class=''><\/div><div class='watu-question' id='question-19'><div class='question-content'><p><strong>NEW QUESTION 42<\/strong><br \/>This error occurred more than four hours ago in the database:<br \/>ORA-04036 PGA memory used by theinstance exceedsPGA_AGGREGATE_LIMIT<br \/>You want to know which process and query were at fault.<br \/>Which two views should you use for this purpose?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15670' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60591' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15670[]' id='answer-id-60591' class='answer answer-19 php-answer-label answerof-15670' value='60591' \/>&nbsp;<label for='answer-id-60591' id='answer-label-60591' class='php-answer-label answer label-19'><span class='answer'>DBA_HIST_ACTIVE_SESS_HISTORY<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60592' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15670[]' id='answer-id-60592' class='answer answer-19 js-answer-label answerof-15670' value='60592' \/>&nbsp;<label for='answer-id-60592' id='answer-label-60592' class='js-answer-label answer label-19'><span class='answer'>DBA_HIST_SQLSTAT<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60593' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15670[]' id='answer-id-60593' class='answer answer-19 js-answer-label answerof-15670' value='60593' \/>&nbsp;<label for='answer-id-60593' id='answer-label-60593' class='js-answer-label answer label-19'><span class='answer'>DBA_HIST_SQLTEXT<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60594' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15670[]' id='answer-id-60594' class='answer answer-19 js-answer-label answerof-15670' value='60594' \/>&nbsp;<label for='answer-id-60594' id='answer-label-60594' class='js-answer-label answer label-19'><span class='answer'>DBA_HIST_PGASTAT<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60595' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15670[]' id='answer-id-60595' class='answer answer-19 php-answer-label answerof-15670' value='60595' \/>&nbsp;<label for='answer-id-60595' id='answer-label-60595' class='php-answer-label answer label-19'><span class='answer'>DBA_HIST_PROCESS_MEM_SUMMARY<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>To investigate the cause of the ORA-04036 error, which indicates that PGA memory usage exceeds the PGA_AGGREGATE_LIMIT, the appropriate views to consult are DBA_HIST_ACTIVE_SESS_HISTORYandDBA_HIST_PROCESS_MEM_SUMMARY.<br\/>* DBA_HIST_ACTIVE_SESS_HISTORY:This view provides historical information about active sessions in the database. It includes details about the SQL executed, the execution context, and the resources consumed by each session. By examining this view, you can identify the specific sessions and SQL queries that were active and potentially consuming excessive PGA memory around the time the ORA-04036 error occurred.<br\/>* DBA_HIST_PROCESS_MEM_SUMMARY:This view contains historical summaries of memory usage by processes. It can help in identifying the processes that were consuming a significant amount of PGA memory, leading to the ORA-04036 error. This view provides aggregated memory usage information over time,making it easier to pinpoint the processes responsible for high PGA memory consumption.<br\/>Together, these views offer a comprehensive overview of the memory usage patterns and specific queries or processes that might have contributed to exceeding thePGA_AGGREGATE_LIMIT, resulting in the ORA-04036 error.<br\/>References:<br\/>* Oracle Database Reference:DBA_HIST_ACTIVE_SESS_HISTORY<br\/>* Oracle Database Reference:DBA_HIST_PROCESS_MEM_SUMMARY<br\/>* Oracle Database Performance Tuning Guide:Managing Memory<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(19,this)' id='btn-19' value='See Answer'  \/><input type='hidden' id='questionType19' value='checkbox' class=''><\/div><div class='watu-question' id='question-20'><div class='question-content'><p><strong>NEW QUESTION 43<\/strong><br \/>The CURS0R_SHARING and OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES parameters are set to default. The top five wait events in an awr report are due to a large number of hard parses because of several almost identical SQL statements.<br \/>Which two actions could reduce the number of hard parses?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15671' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60596' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15671[]' id='answer-id-60596' class='answer answer-20 js-answer-label answerof-15671' value='60596' \/>&nbsp;<label for='answer-id-60596' id='answer-label-60596' class='js-answer-label answer label-20'><span class='answer'>Create the KEEP cache and cache tables accessed by the SQL statements.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60597' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15671[]' id='answer-id-60597' class='answer answer-20 js-answer-label answerof-15671' value='60597' \/>&nbsp;<label for='answer-id-60597' id='answer-label-60597' class='js-answer-label answer label-20'><span class='answer'>Create the RECYCLE cache and cache tables accessed by the SQL statements.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60598' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15671[]' id='answer-id-60598' class='answer answer-20 php-answer-label answerof-15671' value='60598' \/>&nbsp;<label for='answer-id-60598' id='answer-label-60598' class='php-answer-label answer label-20'><span class='answer'>Increase the size of the library cache.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60599' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15671[]' id='answer-id-60599' class='answer answer-20 js-answer-label answerof-15671' value='60599' \/>&nbsp;<label for='answer-id-60599' id='answer-label-60599' class='js-answer-label answer label-20'><span class='answer'>Set OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES to TRUE.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60600' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15671[]' id='answer-id-60600' class='answer answer-20 php-answer-label answerof-15671' value='60600' \/>&nbsp;<label for='answer-id-60600' id='answer-label-60600' class='php-answer-label answer label-20'><span class='answer'>Set the CURSOR_SHARING parameter to FORCE.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>To reduce the number of hard parses due to several almost identical SQL statements, you can take the following actions:<br\/>* C (Correct): Increasing the size of the library cache can help reduce hard parses by providing more memory to store more execution plans. This allows SQL statements to be shared more effectively.<br\/>* E (Correct): Setting the CURSOR_SHARING parameter to FORCE will cause Oracle to replace literals in SQL statements with bind variables, which can significantly reduce the number of hard parses by making it more likely that similar SQL statements will share the same execution plan.<br\/>The other options do not directly impact the number of hard parses:<br\/>* A (Incorrect): Creating the KEEP cache and caching tables accessed by the SQL statements can improve performance for those tables, but it does not directly reduce the number of hard parses.<br\/>* B (Incorrect): Creating the RECYCLE cache and caching tables accessed by the SQL statements can make it more likely that objects will be removed from the cache quickly, which does not help with hard parse issues.<br\/>* D (Incorrect): Setting OPTIMIZER_CAPTURE_SQL_PLAN_BASELINES to TRUE can help stabilize SQL execution plans but will not reduce the number of hard parses. This parameter is used to automatically capture SQL plan baselines for repeatable SQL statements, which can prevent performance regressions due to plan changes.<br\/>References:<br\/>* Oracle Database Performance Tuning Guide: Minimizing Hard Parses<br\/>* Oracle Database SQL Tuning Guide: CURSOR_SHARING<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(20,this)' id='btn-20' value='See Answer'  \/><input type='hidden' id='questionType20' value='checkbox' class=''><\/div><div class='watu-question' id='question-21'><div class='question-content'><p><strong>NEW QUESTION 44<\/strong><br \/>What are the least elevated values of statistics_level and C0NTR0LJ4ANAGEMENT_PACK_ACCESS that allow the usage of Monitoring of Database Operations?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15672' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60601' \/><div class='watu-question-choice'><input type='radio' name='answer-15672[]' id='answer-id-60601' class='answer answer-21 php-answer-label answerof-15672' value='60601' \/>&nbsp;<label for='answer-id-60601' id='answer-label-60601' class='php-answer-label answer label-21'><span class='answer'>STATISTICS_LEVEL=ALL and<br \/>CONTROL_MANAGEMENT_PACK_ACCESS=DIAGOSTIC+TUNING<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60602' \/><div class='watu-question-choice'><input type='radio' name='answer-15672[]' id='answer-id-60602' class='answer answer-21 js-answer-label answerof-15672' value='60602' \/>&nbsp;<label for='answer-id-60602' id='answer-label-60602' class='js-answer-label answer label-21'><span class='answer'>STATISTICS_LEVEL=BASIC and CONTROL_MANAGEMENT_PACK ACCESS=DIAGOSTIC<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60603' \/><div class='watu-question-choice'><input type='radio' name='answer-15672[]' id='answer-id-60603' class='answer answer-21 js-answer-label answerof-15672' value='60603' \/>&nbsp;<label for='answer-id-60603' id='answer-label-60603' class='js-answer-label answer label-21'><span class='answer'>STATISTICS_LEVEL=TYPICAL and<br \/>CONTROL_MANAGEMENT_PACK_ACCESS-DIAGOSTIC*TUNING<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60604' \/><div class='watu-question-choice'><input type='radio' name='answer-15672[]' id='answer-id-60604' class='answer answer-21 js-answer-label answerof-15672' value='60604' \/>&nbsp;<label for='answer-id-60604' id='answer-label-60604' class='js-answer-label answer label-21'><span class='answer'>STATISTICS_LEVEL=TYPICAL and CONTROL_MANAGEMENT_PACK_ACCESS=DIAGOSTIC<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>Monitoring of Database Operations requires that theSTATISTICS_LEVELparameter be set toALLand CONTROL_MANAGEMENT_PACK_ACCESSbe set toDIAGNOSTIC+TUNING. These settings enable all the advisory features and automatic tuning features within the Oracle Database, including the Automatic Workload Repository (AWR), Automatic Database Diagnostic Monitor (ADDM), and the full functionality of the SQL Tuning Advisor and SQL Access Advisor, which are components of the Diagnostic and Tuning packs.<br\/>* STATISTICS_LEVEL=ALL:This setting enables the collection of all system statistics for problem detection and self-tuning purposes.<br\/>* CONTROL_MANAGEMENT_PACK_ACCESS=DIAGNOSTIC+TUNING:This grants access to both the Diagnostic Pack and the Tuning Pack, which are essential for detailed performance monitoring and tuning capabilities.<br\/>References:<br\/>* Oracle Database Reference:STATISTICS_LEVEL<br\/>* Oracle Database Licensing Information User Manual:Oracle Database Management Packs<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(21,this)' id='btn-21' value='See Answer'  \/><input type='hidden' id='questionType21' value='radio' class=''><\/div><div class='watu-question' id='question-22'><div class='question-content'><p><strong>NEW QUESTION 45<\/strong><br \/>A Standard Edition production database has performance problems for two hours on the same day each week.<br \/>Which tool must you use to diagnose the problem?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15673' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60605' \/><div class='watu-question-choice'><input type='radio' name='answer-15673[]' id='answer-id-60605' class='answer answer-22 js-answer-label answerof-15673' value='60605' \/>&nbsp;<label for='answer-id-60605' id='answer-label-60605' class='js-answer-label answer label-22'><span class='answer'>SQL Performance Analyzer<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60606' \/><div class='watu-question-choice'><input type='radio' name='answer-15673[]' id='answer-id-60606' class='answer answer-22 js-answer-label answerof-15673' value='60606' \/>&nbsp;<label for='answer-id-60606' id='answer-label-60606' class='js-answer-label answer label-22'><span class='answer'>AWR Compare Periods report<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60607' \/><div class='watu-question-choice'><input type='radio' name='answer-15673[]' id='answer-id-60607' class='answer answer-22 js-answer-label answerof-15673' value='60607' \/>&nbsp;<label for='answer-id-60607' id='answer-label-60607' class='js-answer-label answer label-22'><span class='answer'>Database Replay<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60608' \/><div class='watu-question-choice'><input type='radio' name='answer-15673[]' id='answer-id-60608' class='answer answer-22 php-answer-label answerof-15673' value='60608' \/>&nbsp;<label for='answer-id-60608' id='answer-label-60608' class='php-answer-label answer label-22'><span class='answer'>Statspack report<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>For a Standard Edition production database, the Statspack tool is available to diagnose performance problems.<br\/>The Automatic Workload Repository (AWR) and its related tools like AWR Compare Periods report and SQL Performance Analyzer are features of the Oracle Database Enterprise Edition and are not available in Standard Edition. Database Replay is also a feature of the Enterprise Edition. Statspack is a performance diagnostic tool provided for earlier versions and Standard Editions of the Oracle Database to collect, store, and analyze performance data.<br\/>References<br\/>* Oracle Database 19c Administrator&#8217;s Guide &#8211; Using Statspack to Diagnose Database Performance Issues<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(22,this)' id='btn-22' value='See Answer'  \/><input type='hidden' id='questionType22' value='radio' class=''><\/div><div class='watu-question' id='question-23'><div class='question-content'><p><strong>NEW QUESTION 46<\/strong><br \/>Which three statements are true about using the in Memory (IM) column store?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15674' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60609' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15674[]' id='answer-id-60609' class='answer answer-23 js-answer-label answerof-15674' value='60609' \/>&nbsp;<label for='answer-id-60609' id='answer-label-60609' class='js-answer-label answer label-23'><span class='answer'>It does not improve performance for queries using cached results of function evaluations on columns from the same table.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60610' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15674[]' id='answer-id-60610' class='answer answer-23 js-answer-label answerof-15674' value='60610' \/>&nbsp;<label for='answer-id-60610' id='answer-label-60610' class='js-answer-label answer label-23'><span class='answer'>It does not improve performance for queries that use join groups on columns from different tables.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60611' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15674[]' id='answer-id-60611' class='answer answer-23 php-answer-label answerof-15674' value='60611' \/>&nbsp;<label for='answer-id-60611' id='answer-label-60611' class='php-answer-label answer label-23'><span class='answer'>It can improve OLTP workload performance by avoiding the use of indexes.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60612' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15674[]' id='answer-id-60612' class='answer answer-23 js-answer-label answerof-15674' value='60612' \/>&nbsp;<label for='answer-id-60612' id='answer-label-60612' class='js-answer-label answer label-23'><span class='answer'>It does not improve performance for queries using user-defined virtual column results.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60613' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15674[]' id='answer-id-60613' class='answer answer-23 php-answer-label answerof-15674' value='60613' \/>&nbsp;<label for='answer-id-60613' id='answer-label-60613' class='php-answer-label answer label-23'><span class='answer'>It does not require all database data to fit in memory to improve query performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60614' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15674[]' id='answer-id-60614' class='answer answer-23 php-answer-label answerof-15674' value='60614' \/>&nbsp;<label for='answer-id-60614' id='answer-label-60614' class='php-answer-label answer label-23'><span class='answer'>It improves performance for queries joining several tables using bloom filter joins.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The Oracle In-Memory (IM) column store feature enhances the performance of databases by providing a fast columnar storage format for analytical workloads while also potentially benefiting OLTP workloads.<br\/>* C (True):It can improve OLTP workload performance by providing a faster access path for full table scans and reducing the need for indexes in certain scenarios, as the In-Memory store allows for efficient in-memory scans.<br\/>* E (True):The In-Memory column store does not require all database data to fit in memory. It can be used selectively for performance-critical tables or partitions, and Oracle Database will manage the population and eviction of data as needed.<br\/>* F (True):In-Memory column store can significantly improve performance for queries joining several tables, especially when bloom filters are used, as they are highly efficient with the columnar format for large scans and join processing.<br\/>The other options provided are not correct in the context of the In-Memory column store:<br\/>* A (False):While In-Memory column store is designed for analytical queries rather than caching results of function evaluations, it does not specifically avoid improving performance for queries using cached results of function evaluations.<br\/>* B (False):In-Memory column store can improve the performance of queries that use join groups, which can be used to optimize joins on columns from different tables.<br\/>* D (False):In-Memory column store can improve the performance of queries using expressions, including user-defined virtual columns, because it supports expression statistics which help in<br\/>* optimizing such queries.<br\/>References:<br\/>* Oracle Database In-Memory Guide:In-Memory Column Store in Oracle Database<br\/>* Oracle Database In-Memory Guide:In-Memory Joins<br\/>* Oracle Database In-Memory Guide:In-Memory Aggregation<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(23,this)' id='btn-23' value='See Answer'  \/><input type='hidden' id='questionType23' value='checkbox' class=''><\/div><div class='watu-question' id='question-24'><div class='question-content'><p><strong>NEW QUESTION 47<\/strong><br \/>You want to reduce the amount of db file scattered read that is generated in the database.You execute the SQL Tuning Advisor against the relevant workload. Which two can be part of the expected result?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15675' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60615' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15675[]' id='answer-id-60615' class='answer answer-24 js-answer-label answerof-15675' value='60615' \/>&nbsp;<label for='answer-id-60615' id='answer-label-60615' class='js-answer-label answer label-24'><span class='answer'>recommendations regarding partitioning the tables<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60616' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15675[]' id='answer-id-60616' class='answer answer-24 php-answer-label answerof-15675' value='60616' \/>&nbsp;<label for='answer-id-60616' id='answer-label-60616' class='php-answer-label answer label-24'><span class='answer'>recommendations regarding the creation of materialized views<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60617' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15675[]' id='answer-id-60617' class='answer answer-24 php-answer-label answerof-15675' value='60617' \/>&nbsp;<label for='answer-id-60617' id='answer-label-60617' class='php-answer-label answer label-24'><span class='answer'>recommendations regarding the creation of additional indexes<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60618' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15675[]' id='answer-id-60618' class='answer answer-24 js-answer-label answerof-15675' value='60618' \/>&nbsp;<label for='answer-id-60618' id='answer-label-60618' class='js-answer-label answer label-24'><span class='answer'>recommendations regarding rewriting the SQL statements<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60619' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15675[]' id='answer-id-60619' class='answer answer-24 js-answer-label answerof-15675' value='60619' \/>&nbsp;<label for='answer-id-60619' id='answer-label-60619' class='js-answer-label answer label-24'><span class='answer'>recommendations regarding the creation of SQL Patches<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>The SQL Tuning Advisor provides recommendations for improving SQL query performance. This may include suggestions for creating additional indexes to speed up data retrieval and materialized views to precompute and store query results.References:<br\/>* Oracle Database SQL Tuning Guide, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(24,this)' id='btn-24' value='See Answer'  \/><input type='hidden' id='questionType24' value='checkbox' class=''><\/div><div class='watu-question' id='question-25'><div class='question-content'><p><strong>NEW QUESTION 48<\/strong><br \/>Which three statements are true about tuning dimensions and details of v$sys_time_model and DB time?<\/p>\n<\/div><input type='hidden' name='question_id[]' value='15676' \/><div class='watu-questions-wrap '><input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60620' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15676[]' id='answer-id-60620' class='answer answer-25 php-answer-label answerof-15676' value='60620' \/>&nbsp;<label for='answer-id-60620' id='answer-label-60620' class='php-answer-label answer label-25'><span class='answer'>Statspack cannot account for high CPU time when CPU TIME is a Top 10 event in DB time. When CPU time is high, SQL tuning may improve performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60621' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15676[]' id='answer-id-60621' class='answer answer-25 js-answer-label answerof-15676' value='60621' \/>&nbsp;<label for='answer-id-60621' id='answer-label-60621' class='js-answer-label answer label-25'><span class='answer'>Systems in which CPU time is dominant need more tuning that those in which WAIT TIME is dominant.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60622' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15676[]' id='answer-id-60622' class='answer answer-25 js-answer-label answerof-15676' value='60622' \/>&nbsp;<label for='answer-id-60622' id='answer-label-60622' class='js-answer-label answer label-25'><span class='answer'>The proportion of WAIT TIME to CPU TIME always increases with increased system load.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60623' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15676[]' id='answer-id-60623' class='answer answer-25 php-answer-label answerof-15676' value='60623' \/>&nbsp;<label for='answer-id-60623' id='answer-label-60623' class='php-answer-label answer label-25'><span class='answer'>When WAIT TIME is high, instance tuning may improve performance.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60624' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15676[]' id='answer-id-60624' class='answer answer-25 js-answer-label answerof-15676' value='60624' \/>&nbsp;<label for='answer-id-60624' id='answer-label-60624' class='js-answer-label answer label-25'><span class='answer'>Parse Time Elapsed accounts for successful soft and hard parse operations only.<\/span><\/label><\/div>\n<input type='hidden' name='answer_ids[]' class='watu-answer-ids' value='60625' \/><div class='watu-question-choice'><input type='checkbox' name='answer-15676[]' id='answer-id-60625' class='answer answer-25 php-answer-label answerof-15676' value='60625' \/>&nbsp;<label for='answer-id-60625' id='answer-label-60625' class='php-answer-label answer label-25'><span class='answer'>DB Time accounts for all time used by background processes and user sessions.<\/span><\/label><\/div>\n<\/div><div class='show-question-feedback' style='display:none;'>A: Statspack is a performance diagnostic tool that can help identify high CPU usage issues. High CPU time may indicate that SQL statements need to be tuned for better performance.<br\/>D: High wait times can often be reduced by instance tuning, such as adjusting database parameters or improving I\/O performance.<br\/>F: DB Time is a cumulative time metric that includes the time spent by both user sessions and background processes executing database calls.References:<br\/>* Oracle Database Performance Tuning Guide, 19c<br\/>* Oracle Database Concepts, 19c<\/div><input type='button' class='showchecked' style='margin: 10px 0;' onclick='showanswer1(25,this)' id='btn-25' value='See Answer'  \/><input type='hidden' id='questionType25' value='checkbox' class=''><\/div><div style='display:none' id='question-26'><br \/><div class='question-content'><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/plugins\/watu\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading ...\" title=\"Loading ...\" \/>&nbsp;Loading &#8230;<\/div><\/div><br \/>\n<input type=\"button\" name=\"action\" onclick=\"Watu.submitResult()\" id=\"action-button\" style=\"margin:0 auto 20px auto;\" value=\"View Results\"  class=\"watu-submit-button\" \/>\n<input type=\"hidden\" name=\"no_ajax\" value=\"0\"><input type=\"hidden\" name=\"quiz_id\" value=\"797\" \/>\n<input type=\"hidden\" id=\"watuStartTime\" name=\"start_time\" value=\"2026-09-23 23:47:50\" \/>\n<\/form>\n<\/div>\n<div id=\"watu-loading-result\" style=\"display:none;\">\n\t<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.topexamcollection.com\/wp-content\/plugins\/watu\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading\" title=\"Loading\" \/><\/p>\n<\/div>\t\n<script type=\"text\/javascript\">\nvar exam_id=0;\nvar question_ids='';\nvar watuURL='';\njQuery(function($){\nquestion_ids = \"15652,15653,15654,15655,15656,15657,15658,15659,15660,15661,15662,15663,15664,15665,15666,15667,15668,15669,15670,15671,15672,15673,15674,15675,15676\";\nexam_id = 797;\nWatu.exam_id = exam_id;\nWatu.qArr = question_ids.split(',');\nWatu.post_id = 1873;\nWatu.singlePage = '1';\nWatu.hAppID = \"0.32669400 1790207270\";\nwatuURL = \"https:\/\/blog.topexamcollection.com\/wp-admin\/admin-ajax.php\";\nWatu.noAlertUnanswered = 0;\n});\n\nfunction showanswer1(e,q) {\n\tvar check = new Array();\n\tjQuery('.answer-' + e).each(function (i) {\n\t\tcheck.push(this.checked)\n\t})\n\tlet textval = jQuery('.watu-textarea-' + e).val()\n\tif (jQuery.inArray(true, check) >= 0 || textval !== '' && textval !== undefined) {\n\t\tjQuery(q).stop().fadeOut(300)\n\t\tjQuery('.php-answer-label.label-' + e).addClass(\n\t\t\t'correct-answer'\n\t\t)\n\t\tjQuery('.answer-' + e).each(function (i) {\n\t\t\tif (this.checked && this.className.match(\/js\\-answer\/)) {\n\t\t\t\tvar number = this.id.toString().replace(\/\\D\/g, '')\n\t\t\t\tif (number) {\n\t\t\t\t\tjQuery('#answer-label-' + number).addClass('user-answer')\n\t\t\t\t}\n\t\t\t}\n\t\t})\n\t\tjQuery(q).siblings('.show-question-feedback').stop().fadeIn(300)\n\t\ttextval = ''\n\t} else if (textval == '' || textval == undefined){\n\t\t\/\/jQuery(\".hint\").stop().fadeIn(300)\n\t\talert('Please first answer the question');\n\t}\n}\nvar btnisshow = jQuery(\".php-answer-label\").length\nif (btnisshow > 0) {\n\tjQuery('.showchecked').show()\n} else {\n\tjQuery('.showchecked').hide()\n}\n<\/script>\n<p><strong>Updated 1Z0-084 Certification Exam Sample Questions: <a href=\"https:\/\/www.topexamcollection.com\/1Z0-084-vce-collection.html\" target=\"_blank\">https:\/\/www.topexamcollection.com\/1Z0-084-vce-collection.html<\/a><\/strong><\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>Mar-2025 Pass Your 1Z0-084 Exam at the First Try with 100% Real Exam Get Real Exam Questions for 1Z0-084 with New Questions Oracle 1Z0-084 exam is a comprehensive certification that tests the candidates\u2019 knowledge and skills in performance tuning and management of Oracle Database 19c. 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