OCP-1Z0-053-V13.02-636题

636.Identify the persistent configuration setting for the target database that can be set for the backup by using RMAN. (Choose all that apply.)

A. Backup retention policy

B. Default backup device type

C. Default destinations for backups

D. Multiple backup device types for single backup

E. Default section size for backups

Answer: ABC

答案解析：

参考：http://docs.oracle.com/cd/E11882_01/backup.112/e10642/rcmconfb.htm#BRADV89399

Showing and Clearing Persistent RMAN Configurations

You can use the SHOW command to display the current value of RMAN configured settings for the target database. You can also view whether these commands are currently set to their default values.

To view or change your CONFIGURE command settings:

Start RMAN and connect to a target database and a recovery catalog (if used).
Run the RMAN SHOW command.

For example, run SHOW ALL as shown in Example 5-1 (sample output included). The output includes both parameters that you have changed and those that are set to the default. The configuration is displayed as the series of RMAN commands required to re-create the configuration. You can save the output in a text file and use this command file to re-create the configuration on the same or a different database.

Example 5-1 SHOW ALL Command

SHOW ALL;

RMAN configuration parameters for database with db_unique_name PROD1 are:

CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 3 DAYS;

CONFIGURE BACKUP OPTIMIZATION ON;

CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default

CONFIGURE CONTROLFILE AUTOBACKUP ON;

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE SBT_TAPE TO '%F'; # default

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default

CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 2 BACKUP TYPE TO COMPRESSED BACKUPSET;

CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default

CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE SBT_TAPE TO 1; # default

CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default

CONFIGURE CHANNEL DEVICE TYPE 'SBT_TAPE' PARMS 'ENV=(OB_DEVICE=tape1)';

CONFIGURE MAXSETSIZE TO UNLIMITED; # default

CONFIGURE ENCRYPTION FOR DATABASE OFF; # default

CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default

CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default

CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/disk1/oracle/dbs/snapcf_ev.f'; # default

You can also use the SHOW command with the name of a particular configuration. For example, you can view the retention policy and default device type as follows:

SHOW RETENTION POLICY;

SHOW DEFAULT DEVICE TYPE;
Optionally, use the CONFIGURE ... CLEAR command to return any configuration to its default value, as shown in the following examples:

CONFIGURE BACKUP OPTIMIZATION CLEAR;

CONFIGURE RETENTION POLICY CLEAR;

CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK CLEAR;