问题:
A . To list all backups that were no longer available for restore operations
B . To list all backups that had aged beyond the RMAN retention criteria
C . To list all backup set pieces listed in control-file or recovery-catalog metadata that are not on the backup media
D . To list all datafiles that are no longer part of the database and thus do not need to be backed up
E . To list all archived redo logs that are no longer needed for any database recovery
● 参考解析
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