620.You are using the control file to maintain information about the database backups that are being performed by Recovery Manager (RMAN). Identify two scenarios is which you must have a recovery catalog. (Choose two.)
A.To store the backup information of multiple database
B.To restrict the amount of space that is used by the backups
C.To maintain a backup for a certain time is set by the CONTROL_FILE_RECORD_KEEP_TIME parameter.
D.To list the data files that were in a target database at a given time by using the AT option of REPORT SCHEMA command.
正确答案是AD