Quiz Oracle - 1Z0-083–Reliable Valid Exam Labs

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Oracle 1Z0-083 Exam Syllabus Topics:

Section	Objectives
Topic 1: Database Backup and Recovery	- Database recovery techniques - RMAN configuration and backup strategies
Topic 2: Performance Management	- Automatic Workload Repository (AWR) and diagnostics - SQL performance tuning
Topic 3: Storage and Space Management	- Tablespaces and datafiles - Segment management
Topic 4: Security Management	- User management and privileges - Database auditing and encryption
Topic 5: Database Architecture and Administration	- Oracle Database architecture components - Multitenant container database (CDB/PDB) concepts

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Oracle Database Administration II Sample Questions (Q110-Q115):

NEW QUESTION # 110
A database is configured in archivelog mode.
Full RMAN backups are taken daily and no backup to trace has been taken of the control file.
A media failure has occurred.
In which two scenarios are complete recovery possible?

A. after losing an archived log from before the most recent backup
B. after losing an archived log from after the most recent backup
C. when any archived log from, before, or after the most recent backup is corrupt
D. after losing all copies of the control file
E. after losing the system tablespace

Answer: A,D

NEW QUESTION # 111
While backing up to the Oracle Fast Recovery Area (FRA), you determined the backup is taking too long and suspect a performance bottleneck.
Which three are true about diagnosing and tuning these problems? (Choose three.)

A. If an RMAN BACKUP VALIDATEcommand takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.
B. Setting DBWR_IO_SLAVESto a non zero value can improve backup performance when using synchronous I/O.
C. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITSare a potential performance bottleneck when asynchronous I/O is used.
D. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECONDare a potential performance bottleneck when synchronous I/O is used.
E. Setting DBWR_IO_SLAVESto a non zero value can improve backup performance when using asynchronous I/O/
F. If an RMAN BACKUP VALIDATEcommand takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.
G. If an RMAN BACKUP VALIDATEcommand takes noticeably less than an actual backup, then write I/O is a likely bottleneck.

Answer: A,B,G

Explanation:
http://docshare04.docshare.tips/files/21043/210437276.pdf

NEW QUESTION # 112
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? (Choose two.)

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

Answer: A,D

Explanation:
RMAN automatically manages files in the fast recovery area by deleting obsolete backups and archiving files no longer required for recovery.
https://docs.oracle.com/en/database/oracle/oracle-database/18/ssdbi/about-the-fast-recovery- area-and-the-fast-recovery-area-disk-group.html#GUID-05343E2B-24CF-427E-A068-
9AC2104BEF81

NEW QUESTION # 113
You plan to perform cross-platform PDB transport using XTTS. Which two are true?

A. A backup of the PDB must exist, taken using the BACKUP command with the To PLATFORM clause.
B. The source PDB must not be an application root.
C. The source PDB can be in MOUNT or OPEN state.
D. The source and target platforms must have the same endianess.
E. Automatic conversion of endianess occurs.
F. The source PDB must be in MOUNT state.

Answer: C,D

NEW QUESTION # 114
In a single-instance, multitenant container database (CDB), which three are only ever defined in or part of CDB$ROOT?

A. mandatory Oracle-supplied PL/SQL packages
B. user-defined PL/SQL packages
C. temporary tablespaces
D. undo tablespaces
E. all data dictionary metadata
F. redo logs
G. control files

Answer: E,F,G

NEW QUESTION # 115
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