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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.

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出自：Oracle认证

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