671.Examine the following RMAN command: RMAN> CONFIGURE ENCRYPTION FOR DATABASE ON; RMAN> BACKUP DATABASE PLUS ARCHIVELOG; Which prerequisite must be met before accomplishing the backup?
A.Provide a password for the encryption
B.Set up an Oracle wallet for the encryption
C.No setup is required as it is a default encryption method
D.Both Oracle wallet and password must be set up for the encryption
正确答案是B