1z0-067 Exam Dumps | A complete database backup to media is taken for your database every day. Which three actions would you

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Oracle.1z0-067.v2019-08-07.q147
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Question 127/147

A complete database backup to media is taken for your database every day. Which three actions would
you take to improve backup performance?

A. Set the backup_tape_io_slaves parameter to true.

B. Set the dbwr_io_slaves parameter to a nonzero value if synchronous I/O is in use.

C. Configure large pool if not already done.

D. Remove the rate parameter, if specified, in the allocate channel command.

E. Always use RMAN compression for tape backups rather than the compression provided by media
manager.

F. Always use synchronous I/O for the database.

Correct Answer: B,C,D

Explanation/Reference:
Explanation:
Tuning RMAN Backup Performance: Procedure Many factors can affect backup performance. Often,
finding the solution to a slow backup is a process of trial and error. To get the best performance for a
backup, follow the suggested steps in this section: Step 1: Remove RATE Parameters from Configured
and Allocated Channels Step 2: If You Use Synchronous Disk I/O, Set DBWR_IO_SLAVES Step 3: If You
Fail to Allocate Shared Memory, Set LARGE_POOL_SIZE Step 4: Tune RMAN Tape Streaming
Performance Bottlenecks Step 5: Query V$ Views to Identify Bottlenecks
Reference:https://docs.oracle.com/database/121/BRADV/rcmtunin.htm#BRADV172

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