问题:
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.
● 参考解析
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