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A. report schema
B. report need backup
C. report need backup days 3
D. report user
E. report obsolete

A. To review RMAN control file and recovery catalog metadata and ensure that its correct
B. To delete RMAN backup-related metadata from the recovery catalog
C. To create metadata in the control file and the recovery catalog related to backup set pieces 
D. To create a report that lists database backups
E. To rebuild the recovery catalog