V$RMAN_ENCRYPTION_ALGORITHMS displays supported encryption algorithms. It is used by the RMAN client to validate user-requested algorithms. This view will list AES128, AES192, and AES256 encryption algorithms for the current release. The default algorithm is AES128.

Column Datatype Description
ALGORITHM_ID NUMBER Number to identify the algorithm
ALGORITHM_NAME VARCHAR2(64) Name of the algorithm (for example, AES128, AES192, and AES256)
ALGORITHM_DESCRIPTION VARCHAR2(64) Description of the algorithm
IS_DEFAULT VARCHAR2(3) YES if this is the default encryption algorithm; otherwise NO.
RESTORE_ONLY VARCHAR2(3) NO if this algorithm can be used for backup; otherwise YES.