Which three requirements should be successfully met by an Oracle Secure Backup (OSB) user so that OSB performs RMAN backup or restore requests? (Choose three.)
A: Performing Oracle database backups using RMAN requires RMAN user preauthorization within OSB
D: The preauthorized Oracle Secure Backup user must also be assigned to an Oracle Secure Backup class possessing the following rights:
access Oracle backups (set to owner, class, or all)
perform Oracle backups and restores
F: The preauthorized Oracle Secure Backup user must be mapped to operating system privileges to access the files to be backed up or restored. the preauthorized Oracle Secure Backup user can perform RMAN operations only on the host where it has access to files.
References: https://docs.oracle.com/cd/E16926_01/doc.121/e16564/osb_rman_backup.htm#OBADM199
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