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Your database is up and running and one of your three control files is accidentally erased. You start RMAN and run the following command: RESTORE CONTROLFILE FROM AUTOBACKUP; Which of the following statements is true? (Choose all that apply.)
Correct Answer: C,E
Explanation/Reference: Explanation: During the database running, the control files are locked by the database instance, you must shutdown the database and startup at NOMOUNT status to restore a missing control file. And you have to open database with RESETLOGS option, due to control file change.