[Q12-Q32] 1z1-084 Certification Exam Dumps Questions in here [Jan-2025] : Top Exam Collection : http://blog.topexamcollection.com

NEUE FRAGE 12
SGA_TARGET and PGA_AGGREGATE_TARGET are configured to nonzero values.
MEMORY_target is then set to a nonzero value but memory_MAX_TARGET is not set.
Which two statements are true?

NEUE FRAGE 13
Examine this statement and output:

Which two situations can trigger this error?

The user lacks the required privileges to execute the DBMS WORKLOAD CAPTURE package or the directory.

There is a file in the capture directory.

The syntax is incomplete.

The capture directory is part of the root file system.

The instance is unable to access the capture directory.

NEUE FRAGE 14
Which three statements are true about server-generated alerts?

They are notifications from the Oracle Database Server of an existing or impending problem.

They provide notifications but never any suggestions for correcting the identified problems.

They are logged in the alert log.

They can be viewed only from the Cloud Control Database home page.

Their threshold settings can be modified by using DBMS_SERVER_ALERT.

They may contain suggestions for correcting the identified problems.

Server-generated alerts in Oracle Database are designed to notify DBAs and other administrators about issues within the database environment. These alerts can be triggered by a variety of conditions, including threshold-based metrics and specific events such as ORA- error messages. Here’s how these options align with the statements provided:
* A (True):Server-generated alerts are indeed notifications from the Oracle Database Server that highlight existing or impending issues. These alerts are part of Oracle’s proactive management capabilities, designed to inform administrators about potential problems before they escalate.
* C (True):These alerts are logged in the alert log of the Oracle Database. The alert log is a crucial diagnostic tool that records major events and changes in the database, including server-generated alerts.
This log is often the first place DBAs look when troubleshooting database issues.
* F (True):Server-generated alerts may include suggestions for correcting identified problems. Oracle Database often provides actionable advice within these alerts to assist in resolving issues more efficiently. These suggestions can range from adjusting configuration parameters to performing specific maintenance tasks.
Options B, D, and E do not accurately describe server-generated alerts:
* B (False):While the statement might have been true in some contexts, Oracle’s server-generated alerts often include corrective suggestions, making this statement incorrect.
* D (False):Server-generated alerts can be viewed from various interfaces, not just the Cloud Control Database home page. They are accessible through Enterprise Manager, SQL Developer, and directly within the database alert log, among other tools.
* E (False):While it’s true that threshold settings for some alerts can be modified, the method specified, usingDBMS_SERVER_ALERT, is not correct. Threshold settings are typically adjusted through Enterprise Manager or by modifying specific initialization parameters directly.
Referenzen:
* Oracle Database Documentation:Oracle Database 19c: Performance Management and Tuning
* Oracle Base: Alert Log and Trace Files
* Oracle Support:Understanding and Managing Server-Generated Alerts

NEUE FRAGE 15
Which two statements are true about disabling Automatic Shared Memory Management (ASMM)?

All auto-tuned SGA components are reset to their original user-defined values.

All SGA components excluding fixed SGA and other internal allocations are readjusted immediately after disabling ASMM.

Both SGA_TARGET and SGA_MAX_SIZE must be set to zero.

All SGA components retain their current sizes at the time of disabling.

The SGA size remains unaffected after disabling ASMM.

It requires a database instance restart to take effect.

NEUE FRAGE 16
For which two actions can SQL Performance Analyzer be used to assess the impact of changes to SQL performance?

storage, network, and interconnect changes

operating system upgrades

changes to database initialization parameters

database consolidation for pluggable databases (PDBs)

operating system and hardware migrations

NEUE FRAGE 17
You need to collect and aggregate statistics for the ACCTG service and PAYROLL module, and execute:

Where do you find the output of this command?

By viewing V$SERV_MOD_ACT_STATS

In $ORACLE_BASE/diag/rdbms/<db unique name>/<instance name>/trace

By viewing V$SERVICE_STATS

In the current working directory

NEUE FRAGE 18
Which two statements are true about the use and monitoring of Buffer Cache Hit ratios and their value in tuning Database I/O performance?

A 99% cache hit ratio can be observed for database instances which have very poor I/O performance.

A 60% cache hit ratio can be observed for database instances which have very good I/O performance.

The performance of workloads that primarily generate full table scans and fast full index scans are always affected by the cache hit ratio.

The buffer cache advisory view v$db_cache_advice provides advice on cache hit ratios appropriate for the instance workload.

Both the RECYCLE and KEEP buffer caches should always have a very high cache hit ratio.

NEUE FRAGE 19
Which two statements are true about the use and monitoring of Buffer Cache Hit ratios and their value in tuning Database I/O performance?

The performance of workloads that primarily generate full table scans and fast full index scans are always affected by the cache hit ratio.

A 99% cache hit ratio can be observed for database instances which have very poor I/O performance.

The buffer cache advisory view v$db_cache_advice provides advice on cache hit ratios appropriate for the instance workload.

Both the RECYCLE and KEEP buffer caches should always have a very high cache hit ratio.

A 60% cache hit ratio can be observed for database instances which have very good I/O performance.

NEUE FRAGE 20
Which two statements are true about Data Pump import for objects that used the in Memory (IM) column store in their source database?

It always gives preference to the IM column store clause defined at the tablespace level over table-level definitions.

It must always transports existing INMEMORY attributes.

Its INMEM0RY_CLAUSE of the Data Pump Export allows modifications to IM column store clause of a table with existing INMEMORY setting.

Its TRANSFORM clause can be used to add the INMEMORV clause to exported tables that lack them.

It ignores the IM column store clause of the exporting objects.

It can generates the INMEMORY clause that matches the table settings at export time.

NEUE FRAGE 21
Examine this output of a query of VSPGA_TAPGET_ADVICE:

Which statements is true’

With a target of 700 MB or more, all multipass executions work areas would be eliminated.

PGAA_AGGREGATE should be set to at least 800 MB.

GGREGATE_TARGET should be set to at least 700 MB.

With a target of 800 MB or more, all one-pass execution work areas would be eliminated.

NEUE FRAGE 22
Examine this AWR report excerpt:

You must reduce the impact of database I/O, without increasing buffer cache size and without modifying the SQL statements.
Which compression option satisfies this requirement?

MN STORE COMPRESS FOR QUERY LOW

STORE COMPRESS

ROW STORE COMPRESS ADVANCED

COLUMN STORE COMPRESS FOR QUERY HIGH

NEUE FRAGE 23
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?

recommendations regarding the creation of additional indexes

recommendations regarding rewriting the SQL statements

recommendations regarding the creation of materialized views

recommendations regarding the creation of SQL Patches

recommendations regarding partitioning the tables

NEUE FRAGE 24
You need to transport performance data from a Standard Edition to an Enterprise Edition database. What is the recommended method to do this?

Export the data by using expdp from Statspack and import it by using $ORACLE_HOME/rdbms/admin
/awrload into the AWR repository.

Export the data by using expdp from the ftatspack repository and import it by using impdp into the AWR repository.

Export the data by using the expdp utility and parameter file spuexp.par from the Statspack repository and import it by using impdp into Export the data by using expdp from the Statspack repository and import it by using impdp into the AWR repository.

Export the data by using the exp utility and parameter file spuexp.par from the Statspack repository and import it by using imp into a dedicated Statspack schema on the destination.

NEUE FRAGE 25
Accessing the SALES tables causes excessive db file sequential read wait events.
Examine this AWR except:

Now, examine these attributes displayed by querying dba_tables:

Finally, examine these parameter settings:

Which two must both be used to reduce these excessive waits?

Partition the SALES table.

Increase PCTFREE for the SALES table.

Re-create the SALES table.

Compress the SALES table.

Coalesce all sales table indexes.

NEUE FRAGE 26
Which two options are part of a Soft Parse operation?

SQL Row Source Generation

SQL Optimization

Semantic Check

Shared Pool Memory Allocation

Syntax Check

NEUE FRAGE 27
You need to collect and aggregate statistics for the ACCTG service and PAYROLL module, and execute:

Where do you find the output of this command?

By viewing V$SERV_MOD_ACT_STATS

In $ORACLE_BASE/diag/rdbms/<db unique name>/<instance name>/trace

By viewing V$SERVICE_STATS

In the current working directory

NEUE FRAGE 28
SGA_TARGET and PGA_AGGREGATE_TARGET are configured to nonzero values.
MEMORY_target is then set to a nonzero value but memory_MAX_TARGET is not set.
Which two statements are true?

NEUE FRAGE 29
Database performance has degraded recently.
index range scan operations on index ix_sales_time_id are slower due to an increase in buffer gets on sales table blocks.
Examine these attributes displayed by querying DBA_TABLES:

Now, examine these attributes displayed by querying DBA_INDEXES:

Which action will reduce the excessive buffer gets?

Re-create the SALES table sorted in order of index IX_SALES_TIME_ID.

Re-create index IX_SALES_TIME_ID using ADVANCED COMPRESSION.

Re-create the SALES table using the columns in IX_SALES_TIME_ID as the hash partitioning key.

Partition index IX_SALES_TIME_ID using hash partitioning.

NEUE FRAGE 30
Accessing the SALES tables causes excessive db file sequential read wait events.
Examine this AWR except:

Now, examine these attributes displayed by querying dba_tables:

Finally, examine these parameter settings:

Which two must both be used to reduce these excessive waits?

Partition the SALES table.

Increase PCTFREE for the SALES table.

Re-create the SALES table.

Compress the SALES table.

Coalesce all sales table indexes.

NEUE FRAGE 31
Which three statements are true about tuning dimensions and details of v$sys_time_model and DB time?

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.

Systems in which CPU time is dominant need more tuning that those in which WAIT TIME is dominant.

The proportion of WAIT TIME to CPU TIME always increases with increased system load.

When WAIT TIME is high, instance tuning may improve performance.

Parse Time Elapsed accounts for successful soft and hard parse operations only.

DB Time accounts for all time used by background processes and user sessions.

NEUE FRAGE 32
Examine this statement and its corresponding execution plan:

Which phase introduces the CONCATENATION step?

SQL Semantic Check

SQL Execution

SQL Row Source Generation

SQL Transformation

SQL Adaptive Execution