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- 多项选择题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.（）
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.
- A,D
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