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Observe the following warning in an RMAN session of your database instance：   WARNING:// new failures were found since last LIST FAILURE command   Which statement describes the scenario that must have produced this warning？（）
A: The CHANGE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository（ADR）
B: The VALIDATE DATABASE command has detected new failures recorded in the Automatic Diagnostic Repository （ADR）
C: The ADVISE FAILURE command has detected new failures recorded in the Automatic Diagnostic Repository （ADR） since the last LIST FAILURE
D: The RECOVER command has detected new failures recorded in the Automatic Diagnostic Repository （ADR） since the last LIST FAILURE command was executed

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出自：Oracle认证

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