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.（）<br>A:To store the backup information of multiple database<br>B:To restrict the amount of space that is used by the backups<br>C:To maintain a backup for a certain time is set by the CONTROL_FILE_RECORD_KEEP_TIME parameter.<br>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.

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.

出自：Oracle认证

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