Backing up a database is one of the usual DBA tasks and is a mandatory job on production systems. Recovery Manager (RMAN) has been supplied and recommended by Oracle, and provides effective, fast, and manageable methods to back up, restore, and recover an Oracle Database. Therefore, it is the most commonly used backup and recovery manager for Oracle Databases.
When used with Data Guard, RMAN offers extra safety and effectiveness to database administrators. It's possible to use a backup taken on the standby in order to restore and recover a primary database, and vice versa. Datafile, control file, and archived log file backups are interchangeable in a Data Guard environment. So we can prefer carrying the backup load on the primary ...
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