A. Create a backup of the database and recover all corrupted blocks found in the backup.
B. Run a backup validation and list all the logically corrupt blocks as well as physically corrupt blocks in the database.
C. Run a backup validation to populate V$COPY_CORRUPTION view， and then list any corrupt blocks recorded in the view.
D. Run a backup validation to populate V$DATABASE_BLOCK_CORRUPTION view， and then repair any corrupt blocks recorded in the view.
E. Run a backup validation， repair any corrupt blocks found during the validation process， and then update V$DATABASE_BLOCK_CORRUPTION view to indicate which corrupt blocks have been repaired.

A. Eliminate the necessity for backups.
B. Perform optimized image copy backups.
C. Perform optimized incremental backups.
D. Enable checkpoint （CKPT） to perform checkpointing at every block change.
E. Enable database writer （DBWn） to write changed blocks to data files faster.