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Oracle 1Z0-083 Exam Syllabus Topics:

Section	Objectives
Performance Management	- SQL performance tuning - Automatic Workload Repository (AWR) and diagnostics
Database Architecture and Administration	- Oracle Database architecture components - Multitenant container database (CDB/PDB) concepts
Database Backup and Recovery	- RMAN configuration and backup strategies - Database recovery techniques
Security Management	- User management and privileges - Database auditing and encryption
Storage and Space Management	- Segment management - Tablespaces and datafiles

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Oracle Database Administration II Sample Questions (Q155-Q160):

NEW QUESTION # 155
Choose two. 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 takesroughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
B. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECOND are a potential performance bottleneck when synchronous I/O is used.
C. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITS are a potential performance bottleneck when asynchronous I/O is used.
D. If an RMAN BACKUP VALIDATE command takesroughly the same time as an actual backup, then read I/O is a likely bottleneck.F
E. If an RMAN BACKUP VALIDATE command takes noticeably less time than an actual backup, then write I/O is a likely bottleneck.

Answer: B,C,E

NEW QUESTION # 156
Choose two. Your database is in ARCHIVELOG mode and you plan to use Flashback Database. Which two features or parameters manage space availability in the fast recovery area?

A. the DB_RECOVERY_FILE_DEST parameter setting
B. the backup optimization policy
C. using guaranteed UNDO retention
D. the backup retention policy
E. the archived log deletion policy
F. the DB_CREATE_ONLINE_LOG_DEST_n parameter setting

Answer: D,E

NEW QUESTION # 157
A container database (CDB) contains two pluggable databases PDB1 and PDB2.
The local_undo_enabled database property is set to false in the CDB.
Data file 24 of PDB2 was deleted and you need to restore and recover it.
The only RMAN backup that exists was created with the backup database command while connected to CDB$ROOT.
Which three are true?

A. Data file 24 can be recovered only while connected to PDB2.
B. Data file 24 can be restored only while connected to PDB2.
C. Data file 24 can be recovered while connected to PDB2.
D. Data file 24 can be restored and recovered while connected to CDB$ROOT.
E. Data file 24 can be recovered while connected to CDB$ROOT.
F. Data file 24 can be restored only while connected to CDB$ROOT.

Answer: C,D,E

NEW QUESTION # 158
Which three are true about Database Point-in-Time Recovery? (Choose three.)

A. The target point for the recovery must be specified as a stime or System Change Number (SCN).
B. Database Point-in-Time Recovery is performed by the Managed Recovery Process (MRP)
C. The database must have FLASHBACK DATABASE ON to perform Database Point-in-Time Recovery.
D. The database must be open RESETLOGS after Database Point-in-Time Recovery.
E. The Database must be in ARCHIVELOG mode.
F. The database must be in MOUNT state when performing Database Point-in-Time Recovery.

Answer: D,E,F

Explanation:
Explanation
https://docs.oracle.com/cd/B19306_01/backup.102/b14192/flashptr006.htm#:~:text=Database%20point%2Din%

NEW QUESTION # 159
Your production database is running in archivelog mode. You use RMAN with a recovery catalog to back up your database to media and the database is uniquely identified in the recovery catalog. You want to create a test database from the production database and allow the production database to remain open during the duplicate process. You restore the database backups to a new host with the same directory structure as the production database and want to use the recovery catalog for future backups after the database is successfully restored to the new host. How would you achieve this?

A. by using the RMAN duplicate command with nofilenamecheck to recover the database to the new host
B. by using the RMAN switch command to set the new location for the data files
C. by creating a new database in the new host, and then using the RMAN recover command
D. by using the RMAN duplicate command with dbid and set new name for tablespace to recover the database to the new host

Answer: A

NEW QUESTION # 160
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