Which two statements about parallel recovery in a RAC environment are true? (Choose two.)
A.
The RECOVERY_PARALLELISM initialization parameter specifies the number of redo
application server processes participating in instance or media recovery.
B.
The use of the RECOVER Y_PARALLELISM initialization parameter is the only way to initiate
parallel recovery.
C.
The RECOVER Y_PARALLELISM initialization parameter causes serial recovery if the value is
greater than two.
D.
Parallel recovery is most effective at reducing recovery time while concurrently recovering
several data files on several disks.