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Oracle 1Z0-083 Reliable Test Blueprint | Exam 1Z0-083 Preview

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Oracle 1Z0-083 certification exam is a challenging but rewarding opportunity for professionals who want to demonstrate their expertise in Oracle database administration. By earning this certification, candidates can enhance their credibility as database administrators, increase their earning potential, and gain access to a wide range of career opportunities in the IT industry.

Oracle 1Z1-083 Exam is a comprehensive exam that covers a wide range of topics related to Oracle database administration. 1Z0-083 Exam covers topics such as database security, backup and recovery, performance tuning, and troubleshooting. 1Z0-083 exam also covers advanced topics such as high availability, data warehousing, and cloud computing.

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Quiz 2025 Oracle 1Z0-083: Oracle Database Administration II Fantastic Reliable Test Blueprint

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Oracle Database Administration II Sample Questions (Q78-Q83):

NEW QUESTION # 78
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. Data files with a high value in V$BACKUP_SYNC_IO.DISCRETE_BYTES_PER_SECONDare a potential performance bottleneck when synchronous I/O is used.
B. If an RMAN BACKUP VALIDATEcommand takes roughly the same time as an actual backup, then read I/O is a likely bottleneck.
C. Setting DBWR_IO_SLAVESto a non zero value can improve backup performance when using asynchronous I/O/
D. Data files with a high value in V$BACKUP_ASYNC_IO.SHORT_WAITSare a potential performance bottleneck when asynchronous I/O is used.
E. Setting DBWR_IO_SLAVESto a non zero value can improve backup performance when using synchronous I/O.
F. If an RMAN BACKUP VALIDATEcommand takes noticeably less than an actual backup, then write I/O is a likely bottleneck.
G. If an RMAN BACKUP VALIDATEcommand takes roughly the same time as an actual backup, then both read and write I/O are likely bottlenecks.

Answer: B,E,F

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

NEW QUESTION # 79
choose three Which three are true about RMAN duplexed backup sets or image copies?

A. A backup set may be duplexed so that one copy is written to sbt and the other to disk.
B. A backup set may be duplexed with both copies written to sbt.
C. An image copy on disk can be copied to sbt.
D. An image copy on disk can be copied to disk.
E. A backup set may be duplexed with both copies written to disk.
F. An image copy on sbt can be copied to disk.

Answer: B,D,E

NEW QUESTION # 80
Which statement describes the significance of the CHANGE FAILURE command in RMAN? (Choose all that apply.)

A. It is used to explicitly close the open failures.
B. It is used to inform the database about the repair after the repair script executes.
C. It is used to execute the advised repair script.
D. It is used to change failure priority only for HIGH or LOW priorities.
E. It is used to change failure priority only for the CRITICAL priority.

Answer: A,D

NEW QUESTION # 81
Which are the three steps in the SQL tuning process for Oracle Database environments?

A. Identify poorly tuned SQL statements using the SQL Tuning Advisor.
B. Tune SQL statements as a group using the SQL Tuning and SQL Access Advisors.
C. Test tuned SQL statements one at a time for all statements in the application.
D. Tune individual SQL statements using the SQL Tuning Advisor.
E. Identify poorly tuned SQL statements using Automatic Database Diagnostic Monitor.
F. Test the application as a whole using tuned SQL statements.

Answer: D,E,F

NEW QUESTION # 82
Your SALES_ROOTapplication container has two application PDBs.
The SALES_APPapplication has a common table, FIN.REVENUE, in the two PDBs.
Examine this query and its output:

Which two are true? (Choose two.)

A. The MAPTABLEtables defines a logical partition key on a commonly used column for the REVENUEtable.
B. The CONTAINERSclause cannot be used in queries on the REVENUEtable.
C. The REVENUEtable must be a list-partitioned table.
D. The MAPTABLE table is a metadata-linked table.
E. The REVENUEtable partitions are not pruned across the PDBs automatically.
F. A container map exists for the REVENUEtable, but is not enabled.

Answer: A,F

NEW QUESTION # 83
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