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Oracle Database Administration II Sample Questions (Q54-Q59):
NEW QUESTION # 54
Automatic Shared Memory Management is disabled for one of your database instances.
Some SQL statements perform poorly due to excessive hard parse activity, thereby degrading performance.
What would be your next step?
- A. Run the Memory Advisor for the shared pool.
- B. Run the Memory Advisor for the Program Global Area.
- C. Run the SQL Access Advisor.
- D. Run the Memory Advisor for the System Global Area.
- E. Run the SQL Tunning Advisor.
Answer: A
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NEW QUESTION # 55
When backing up to the Oracle Fast Recovery Area (FRA), you determine that the backup takes too long and suspect a performance bottleneck.
Which two are true about diagnosing and tuning these problems?
- A. If an rman backup validate command takes noticeably less time than an actual backup, then write I/O is a likely bottleneck.
- B. If an rman backup validate command takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.
- C. Data files with a high value in v$backup_async_io.short_waits are a potential performance bottleneck when asynchronous I/O is used.
- D. If an rman backup validate command takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
- E. Data files with a high value in v$backup_sync_io.discrete_bytes_per_second are a potential performance bottleneck when synchronous I/O is used.
Answer: B,C
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NEW QUESTION # 56
Which three actions are performed by Database Upgrade Assistant (DBUA)? (Choose three.)
- A. It removes the AUDSYS schema and the AUDIT_ADMIN and AUDIT_VIEWER roles
- B. It increases tablespace size, if required, to meet upgrade requirements.
- C. It empties the RECYCLE BIN.
- D. It sets all user tablespaces to "read-only" before starting the upgrade.
- E. It performs prerequisite checks to verify if the Oracle database is ready for upgrade.
- F. It recompiles all stored PL/SQL code by using utlrp.sql.
Answer: B,C,E
Explanation:
https://docs.oracle.com/en/database/oracle/oracle-database/19/upgrd/upgrading-oracle- database-upgrade-assistant-dbua.html#GUID-8BDDF859-1638-45AC-824D-78FC8154847C
A). False. Only "...This option recompiles all INVALID PL/SQL modules after the upgrade is complete
B). True. "...The following is a list of examples of DBUA checks, and of actions that DBUA performs on the database: Empty database recycle bin..."
C). True. "... DBUA runs the Pre-Upgrade Information Tool as part of the prerequisite checks it performs before starting the upgrade..."
D). False. Only true for option Partial Backup "...Select among the following RMAN backup options:... Create a New Partial Offline RMAN Backup with User Tablespace. If you select this option, then user tablespaces are placed into read-only mode during the upgrade...."
E). False. These elements are not mentioned in the description of the DBUA process.
F). True. DBUA only continues if the check phase verifies that it can increase the size of tablespaces "... uses the following logic to modify or create new required tablespaces..."
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NEW QUESTION # 57
Which two are true about Oracle Database Configuration Assistant (DBCA) templates? (Choose two.)
- A. The General Purpose of Transaction Processing templates are most suitable when concurrency and recoverability are key criteria.
- B. New templates can only be created by modifying an existing user-created template.
- C. Oracle DBCA templates can store only logical structure and not database files.
- D. The Data Warehouse template is most suitable when transaction response time is the key criterion.
- E. Oracle DBCA templates can be used to create new databases and duplicate existing databases.
Answer: A,E
Explanation:
Reference:
https://docs.oracle.com/database/121/ADMQS/GUID-2B8A3B5E-D319-4377-8B22- 8BB67DCC9885.htm#ADMQS0235
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NEW QUESTION # 58
Which two statements are true about RMAN duplexed backups?
- A. It is not supported for image copies.
- B. For performing duplexed backups, the parallelism for the device must be set equal to the number of copies.
- C. It is only supported for backups to tape via the media management interface.
- D. Duplex backups can contain only data files and control files.
- E. Duplex backups can be performed on either disk or media, but cannot be performed on media and disk simultaneously.
Answer: A,E
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NEW QUESTION # 59
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