1z0-067: Upgrade Oracle9i/10g/11g OCA OR OCP to Oracle Database 12c OCP

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

Set the backup_tape_io_slaves parameter to true.
Set the dbwr_io_slaves parameter to a nonzero value if synchronous I/O is in use.
Configure large pool if not already done.
Remove the rate parameter, if specified, in the allocate channel command.
Always use RMAN compression for tape backups rather than the compression provided by media manager.
Always use synchronous I/O for the database.

Correct answer: BCD

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

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

For which three pieces of information can you use the RMAN list command?

stored scripts in the recovery catalog
available archived redo log files
backup sets and image copies that are obsolete
backups of tablespaces
backups that are marked obsolete according to the current retention policy

Correct answer: ABD

Explanation:

About the LIST Command: The primary purpose of the LIST command is to list backup and copies. For example, you can list: -Backups and proxy copies of a database, tablespace, datafile, archived redo log, or control file -Backups that have expired -Backups restricted by time, path name, device type, tag, or recoverability -Archived redo log files and disk copies Reference:http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmreprt.htm#BRADV89585

About the LIST Command: The primary purpose of the LIST command is to list backup and copies. For example, you can list: -Backups and proxy copies of a database, tablespace, datafile, archived redo log, or control file -Backups that have expired -Backups restricted by time, path name, device type, tag, or recoverability -Archived redo log files and disk copies

Reference:http://docs.oracle.com/cd/B28359_01/backup.111/b28270/rcmreprt.htm#BRADV89585

You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference.

Which method or feature should you use?

Database Replay
Automatic Database Diagnostic Monitor (ADDM) Compare Period report
Active Session History (ASH) report
SQL Performance Analyzer

Correct answer: B

Explanation:

References: http://docs.oracle.com/cd/E24628_01/server.121/e17635/tdppt_degrade.htm

Vendor:	Oracle
Exam Code:	1z0-067
Exam Name:	Upgrade Oracle9i/10g/11g OCA OR OCP to Oracle Database 12c OCP
Date:	Apr 08, 2019
File Size:	1 MB

Download Upgrade Oracle9i-10g-11g OCA OR OCP to Oracle Database 12c OCP.1z0-067.PracticeTest.2019-04-08.143q.tqb

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