单选题You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy： CONFIGURE RETENTION POLICY TO REDUNDANCY 3； Which statement is true？（）A The command fails because you cannot configure a redundancy-based retention policy when backup optimization is enabledB Backup optimization is performed， but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed upC Backup optimization is permanently disabledD Backup optimization is temporarily disabled because a redundancy-based retention policy is specified
单选题
You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy： CONFIGURE RETENTION POLICY TO REDUNDANCY 3； Which statement is true？（）
A
The command fails because you cannot configure a redundancy-based retention policy when backup optimization is enabled
B
Backup optimization is performed， but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed up
C
Backup optimization is permanently disabled
D
Backup optimization is temporarily disabled because a redundancy-based retention policy is specified
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单选题You issue the following RMAN command to set a retention policy on a database： RMANCONFIGURE RETENTION POLICY TO REDUNDANCY 2； What will be the outcome of issuing this command？（）A After two days，a backup will be marked obsoleteB After two days，a backup will be deleted from the mediaC If the RMAN repository has records of two or more recent backups of a file，then older backups will be deleted from the media.D If the RMAN repository has records of two or more recent backups of a file then older backups will be marked obsolete.
单选题You have enabled backup optimization in RMAN. You issue the following RMAN command to configure a redundancy-based retention policy: CONFIGURE RETENTION POLICY TO REDUNDANCY 3; Which statement is true?（）AThe command fails because you cannot configure a redundancy-based retention policy when backup optimization is enabledBBackup optimization is performed, but RMAN considers the redundancy-based retention policy when it determines which datafiles should be backed upCBackup optimization is permanently disabledDBackup optimization is temporarily disabled because a redundancy-based retention policy is specified
单选题In Recovery Manager （RMAN）， you set the retention policy to NONE by executing the following command： CONFIGURE RETENTION POLICY TO NONE; What would be the impact of this setting？（）AThe retention policy is cleared.BRMAN does not consider any backup as obsolete.CThe retention policy is set to its default setting of redundancy 1.DThe retention policy is set to its default setting of recovery window 7.
单选题You defined the Recovery Manager （RMAN） retention policy to recovery window of 7 days by executing the following command： RMAN CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS； When a backup is performed， what would be the status of this backup after seven days？（）A The backup would be marked as invalid.B The backup would be marked as obsolete.C The backup would be removed from the media.D The backup would be removed from the RMAN repository.
单选题You set the recovery window to seven days and the backup optimization to ON using the CONFIGURE command of Recovery Manager （RMAN）. The most recent backup of the TOOLStablespace to disk was taken on January 3. The TOOLStablespace is read-only.On February 21， when you execute a command to back up all the tablespaces to disk， you find that RMAN backs up the TOOLS tablespace also， even though the contents of the tablespace have not changed after the backup on January 3. Because there are no changes made to the TOOLStablespace， you decide that the tablespace should not be backed up by RMAN. What can you do to skip backing up the TOOLStablespace without changing the current backup optimization setting？（）A configure a default device for RMAN backupsB temporarily disable the retention policy for RMAN backupsC configure automatic channel allocation for RMAN backupsD use the CONFIGURE command to reconfigure the recovery window to 60 days
单选题You configured the default backup device type as disk for RMAN backups. In your database，because of business requirements，you have to take a simultaneous duplicate backup of the data files when the RMAN BACKUP command is used. What must you set using the RMAN CONFIGURE command to achieve this？（）A MAXSETSIZE TO 2B DEVICE TYPE DISK PARALLELISM 2C RETENTION POLICY TO REDUNDANCY 2D DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 2