單項選擇題

If a backup set is expired， what can you do to correct the problem？（）

A. Change the retention criteria.
B. Make the lost backup set pieces available to RMAN again.
C. Run the crosscheck command to correct the location for the backup set piece contained in the metadata.
D. Nothing. The backup set piece is lost forever.
E. Call Oracle support，their assistance is required.

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單項選擇題

What does it mean if a backup is expired？（）

A. The backup set has exceeded the retention criteria set in RMAN and is eligible for removal.
B. The backup set has one or more invalid blocks in it and is not usable for recovery.
C. The backup set contains one or more tablespaces no longer in the database.
D. The backup set contains one or more missing backup set pieces.
E. The backup set is from a previous version of RMAN and was not upgraded.

多項選擇題

Why would you run the delete obsolete command？（）

A. To remove missing backup set pieces physically from disk
B. To remove metadata related to backup set pieces in the control file and the recovery catalog
C. To mark as deleted records in the control file and the recovery catalog associated with obsolete backup sets
D. To delete backup set pieces associated with backups that are no longer needed due to retention criteria
E. To remove old versions of RMAN backups

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If a backup set is expired， what can you do to correct the problem？（）

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What does it mean if a backup is expired？（）

Why would you run the delete obsolete command？（）

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If a backup set is expired， what can you do to correct the problem？（）

What does it mean if a backup is expired？（）

Why would you run the delete obsolete command？（）