What is an obsolete backup set?

A.
A backup set that is missing one or more backup set pieces

B.
A backup that has exceeded the retention criteria and is no longer needed

C.
A backup set that does not include archived redo logs

D.
A backup set that can not be recovered due to corruption

E.
A backup set superceded by a datafile copy

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Stefano

Explanation:

REPORT OBSOLETE: command to view obsolete files (DELETE OBSOLETE to delete them)

A status of “expired” means that the backup piece or backup set is not found in the backup destination or missing .

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Cương Thi Tiên SInh

Expired: rman metadata have logical information but real physical file doesnot exist.

Obsolete: backups the is obsolete compare to the current retention policy (recovery window | redundancy)

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