HOT 1Z1-084 RELIABLE TEST PDF FREE PDF | HIGH PASS-RATE 1Z1-084 VCE DOWNLOAD: ORACLE DATABASE 19C PERFORMANCE AND TUNING MANAGEMENT

Hot 1z1-084 Reliable Test Pdf Free PDF | High Pass-Rate 1z1-084 Vce Download: Oracle Database 19c Performance and Tuning Management

Hot 1z1-084 Reliable Test Pdf Free PDF | High Pass-Rate 1z1-084 Vce Download: Oracle Database 19c Performance and Tuning Management

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Oracle 1Z0-084 (Oracle Database 19c Performance and Tuning Management) Certification Exam is an excellent platform for database administrators, developers, and performance analysts who want to strengthen their knowledge and expertise in the database performance tuning arena. Oracle Database 19c Performance and Tuning Management certification exam helps to validate the candidates’ skills and knowledge regarding database tuning and optimization methodologies used in the Oracle Database. Earning this certification opens various career opportunities, and it serves as an endorsement of the professional competency and credibility of the certified candidates.

Oracle Database 19c Performance and Tuning Management Sample Questions (Q14-Q19):

NEW QUESTION # 14
Examine this statement and output:

Which two situations can trigger this error?

  • A. The instance is unable to access the capture directory.
  • B. The user lacks the required privileges to execute the DBMS WORKLOAD CAPTURE package or the directory.
  • C. There is a file in the capture directory.
  • D. The syntax is incomplete.
  • E. The capture directory is part of the root file system.

Answer: A,B

Explanation:
The ORA-15505 error indicates that the instance encountered errors while trying to access the specified directory. This could be due to:
A: Insufficient privileges: The user attempting to start the workload capture might not have the required permissions to execute the DBMS_WORKLOAD_CAPTURE package or to read/write to the directory specified.
E: Accessibility: The database instance may not be able to access the directory due to issues such as incorrect directory path, directory does not exist, permission issues at the OS level, or the directory being on a file system that's not accessible to the database instance.
References:
* Oracle Database Error Messages, 19c
* Oracle Database Administrator's Guide, 19c


NEW QUESTION # 15
You need to transport performance data from a Standard Edition to an Enterprise Edition database. What is the recommended method to do this?

  • A. Export the data by using expdp from the ftatspack repository and import it by using impdp into the AWR repository.
  • B. Export the data by using expdp from Statspack and import it by using
    $ORACLE_HOME/rdbms/admin/awrload into the AWRrepository.
  • C. 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.
  • D. 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.

Answer: C

Explanation:
To transport performance data from an Oracle Database Standard Edition, which uses Statspack, to an Enterprise Edition database, which uses AWR, you must consider the compatibility of data structures and repository schemas between these tools. The recommended method is:
* D (Correct):Export the data using theexputility with a parameter file appropriate for Statspack (like spuexp.par) from the Statspack repository and import it into a dedicated Statspack schema on the destination. Since Statspack and AWR use different schemas, it's not recommended to import Statspack data directly into the AWR repository.
The other options are incorrect because:
* A (Incorrect):expdpis not designed to export from Statspack, andawrloadis intended for loading from an AWR export file, not a Statspack export.
* B (Incorrect):Althoughexpdpandimpdpare used for exporting and importing data, the AWR repository schema is different from the Statspack schema, so importing Statspack data directly into the AWR repository is not recommended.
* C (Incorrect):Usingexpdpto export from Statspack and then importing directly into the AWR repository is not the correct approach due to the schema differences between Statspack and AWR.
References:
* Oracle Database Performance Tuning Guide:Migrating from Statspack to AWR


NEW QUESTION # 16
Which Optimizer component helps decide whether to use a nested loop join or a hash join in an adaptive execution plan?

  • A. Statistics Collector
  • B. Automatic Reoptimization
  • C. Statistics Feedback
  • D. Dynamic Statistics
  • E. SQL Plan Directives

Answer: A

Explanation:
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.
References:
* Oracle Database SQL Tuning Guide, 19c


NEW QUESTION # 17
Examine these commands, which execute successfully:

Which statement is true?

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

Answer: B

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 # 18
Which two statements are true about space usage in temporary tablespaces?

  • A. When a global temporary table instantiation is too large to fit in memory, space is allocated in a temporary tablespace.
  • B. When a session consumes all temporary tablespace storage, then the session would hang until the temporary space used by that session is cleared.
  • C. Lack of temporary tablespace space for sort operations can be prevented by using temporary tablespace groups.
  • D. A sort will fail if a sort to disk requires more disk space and no additional extent can be found/allocated in/for the sort segment.
  • E. Temporary tablespaces setting Includes quotas to limit temporary space used by a session for that Temporary tablespace.

Answer: A,C

Explanation:
Regarding space usage in temporary tablespaces, the following statements are true:
* A (Correct):When a global temporary table or a sort operation exceeds the available memory, Oracle Database allocates space in a temporary tablespace to store the temporary data or intermediate results.
* E (Correct):Using temporary tablespace groups can prevent insufficient temporary tablespace for sort operations by providing a collective pool of space from multiple temporary tablespaces, which can be used for user sorting operations.
The other options provided have inaccuracies:
* B (Incorrect):Oracle does not provide a mechanism for setting quotas on temporary tablespaces. Quotas can be set for permanent tablespaces but not for temporary ones.
* C (Incorrect):A sort operation may fail due to insufficient space, but Oracle will attempt to allocate space in the temporary tablespace dynamically. If no space can be allocated, an error is returned rather than a sort failure.
* D (Incorrect):If a session consumes all available temporary tablespace storage, Oracle will not hang the session; it will return an error to the session indicating that it has run out of temporary space.
References:
* Oracle Database Administrator's Guide:Managing Space for Schema Objects
* Oracle Database Concepts:Temporary Tablespaces


NEW QUESTION # 19
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