Which three statements are true about using RMAN with ASM?
A.
RMAN is the only supported method to back up database files stored in ASM.
B.
RMAN is the only supported method to back up ACFS files.
C.
RMAN can use ASM storage for backups.
D.
RMAN cannot use ASM storage for backups.
E.
Using RMAN, database files can be migrated to ASM from a file system.
F.
Using RMAN, database files cannot be moved from ASM to a file system
Explanation:
The procedure for creating a duplicate database to an ASM location is similar to the
procedure described in “Settings and Restrictions for OMF Initialization Parameters” on page 25-4.
The difference is that you must identify the initialization parameters that control the location where
files are created and set these parameters to an ASM disk group. For example, set
DB_CREATE_FILE_DEST, DB_CREATE_ONLINE_DEST_n,and CONTROL_FILES to +DISK1.
Oracle Database Backup and Recovery Advanced User’s Guide
A is right. RMAN is the only supported method
B is wrong. ACFS is normal file system, and RMAN can not backup it
C is right. RMAN can use ASM for backups
D is wrong. C is right
E is right. you can use RMAN to migrate
F is wrong. E is right
So A.C.E. are correct