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Oracle 1Z0-084 exam consists of 75 multiple-choice questions and has a time limit of 120 minutes. 1z1-084 Exam is available in several languages, including English, Japanese, and Korean. The passing score for the exam is 63%, and candidates who pass the exam will receive the Oracle Database 19c Performance and Tuning Management certification.

Oracle 1Z0-084 certification is an excellent way for professionals to enhance their skills and knowledge in Oracle Database 19c performance and tuning management. Oracle Database 19c Performance and Tuning Management certification is globally recognized and is considered a valuable asset in the IT industry. Professionals who hold the 1Z0-084 certification can demonstrate their expertise and credibility in optimizing database performance, ensuring system availability, and reducing system downtime. Overall, the Oracle 1Z0-084 certification is an excellent investment for professionals who want to advance their career in database management.

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Oracle 1Z0-084 is a certification exam that tests the performance and tuning management skills of individuals working with Oracle Database 19c. 1z1-084 exam is designed to assess the knowledge and understanding of the concepts and practices used in managing and optimizing the performance of Oracle databases. Candidates who Pass 1z1-084 Exam earn the Oracle Database 19c Performance and Tuning Management Certified Expert credential.

Oracle Database 19c Performance and Tuning Management Sample Questions (Q30-Q35):

NEW QUESTION # 30
18. The application provider has given full indications regarding the procedure to collect statistics.
To reduce the space used in the SYSAUX tablespace, you want to prevent the optimizer statistics Advisor from running.
Which method will allow you to do this?

A. Set the parameter OPTIMIZER_ADAPTIVE_STATISTICS to FALSE.
B. Use DBMS STATS.DROP ADVISOR TASK to drop the AUTO_STATS_ADVISOR_TASK task.
C. Set the AUTO_STATS_ADVISOR_TASK global statistics preference to FALSE.
D. Use DBMS_AUTO_TASK_ADMIN. DISABLE to disable the AUTO_STATS_ADVISOR_TASK task.

Answer: D

Explanation:
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:
* Oracle Database PL/SQL Packages and Types Reference, 19c

NEW QUESTION # 31
You must configure and enable Database Smart Flash Cache for a database.
You configure these flash devices:

Examine these parameter settings:

What must be configured so that the database uses these devices for the Database Smart Flash Cache?

A. Set DB_FLASH_CACHE_SIZE parameter to 128G, 64G.
B. Set DB_FLASH_CACHE_SIZE to 192G and MEMORY_TARGET to 256G.
C. Set DB_FLASH_CACHE_SIZE parameter to 192G.
D. Disable Automatic Memory Management and set SGA_TARGET to 256G.
E. Set DB_FLASH_CACHE_SIZE to 256G and change device /dev/sdk to 128G.

Answer: A

Explanation:
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 youintend to use for the cache. In this scenario, two flash devices are configured: /dev/sdj with 128G and /dev/sdk with 64G.
* Determine the combined size of the flash devices intended for the Database Smart Flash Cache. In this case, it's 128G + 64G = 192G.
* 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.
* Modify the parameter in the database initialization file (init.ora or spfile.ora) or using an ALTER SYSTEM command. Here's the command for altering the system setting:
ALTER SYSTEM SET DB_FLASH_CACHE_SIZE='128G,64G' SCOPE=SPFILE;
* Since this is a static parameter, a database restart is required for the changes to take effect.
* Upon database startup, it will allocate the Database Smart Flash Cache using the provided sizes for the specified devices.
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.
References
* Oracle Database 19c Documentation on Database Smart Flash Cache
* Oracle Support Articles and Community Discussions on DB_FLASH_CACHE_SIZE Configuration

NEW QUESTION # 32
Users complain about slowness and session interruptions. Additional checks reveal the following error in the application log:

Which file has additional information about this error?

A. SQL trace file automatically generated by the error
B. ASH report
C. Alert log
D. Session trace file SQL trace file automatically generated by the error

Answer: C

Explanation:
When an ORA-00060 deadlock error occurs, detailed information about the error and the deadlock graph are dumped into the alert log. This log contains a trace file name that you can use to find additional detailed information about the sessions involved in the deadlock and the SQL statements they were executing.
References:
* Oracle Database Administrator's Guide, 19c
* Oracle Database Error Messages, 19c

NEW QUESTION # 33
Examine these commands, which execute successfully:

Which statement is true?

A. AWR snapshots can be purged manually in pluggable databases.
B. ADDM, AWR, and ASH reports can be purged automatically.
C. AWR- snapshots in all pluggable databases will be purged automatically after every 60 mins.
D. AD DM is enabled for all pluggable databases.

Answer: A

Explanation:
The DBMS_WORKLOAD_REPOSITORY.MODIFY_SNAPSHOT_SETTINGS procedure 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:
* Oracle Database PL/SQL Packages and Types Reference, 19c
* Oracle Multitenant Administrator's Guide, 19c

NEW QUESTION # 34
This error occurred more than four hours ago in the database:
ORA-04036 PGA memory used by theinstance exceedsPGA_AGGREGATE_LIMIT
You want to know which process and query were at fault.
Which two views should you use for this purpose?

A. DBA_HIST_SQLSTAT
B. DBA_HIST_PGASTAT
C. DBA_HIST_SQLTEXT
D. DBA_HIST_ACTIVE_SESS_HISTORY
E. DBA_HIST_PROCESS_MEM_SUMMARY

Answer: D,E

Explanation:
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.
* 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.
* 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.
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.
References:
* Oracle Database Reference:DBA_HIST_ACTIVE_SESS_HISTORY
* Oracle Database Reference:DBA_HIST_PROCESS_MEM_SUMMARY
* Oracle Database Performance Tuning Guide:Managing Memory

NEW QUESTION # 35
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