View the Exhibit to examine the error that occurred during the database startup. 
You opened an RMAN session for the database. To repair the failure, you executed the following command as the first RMAN command:
RMAN>REPAIR FAILURE;
Which statement describes the consequence of this command?
A.The command performs the recovery and closes the failure.
B.The command only displays the advice and the RMAN script required for recovery.
C.The command executes the RMAN script to repair the failure and remove the entry from the Automatic Diagnostic Repository (ADR).
D.The command produces an error because the ADVISE FAILURE command was not executed before the REPAIR FAILURE command.
执行步骤
list failure
advise failure
repair failure
change failure
ADR(automatic diagnostic repository) 自动诊断存储库，ADR 提供了大量新的信息以及新的工具以方便数据库管理