You administer an online transaction processing (OLTP) system whose database is stored in Automatic
Storage Management (ASM) and whose disk group use normal redundancy.
One of the ASM disks goes offline, and is then dropped because it was not brought online before
DISK_REPAIR_TIME elapsed.
When the disk is replaced and added back to the disk group, the ensuing rebalance operation is too slow.
Which two recommendations should you make to speed up the rebalance operation if this type of failure
happens again?
A.
Increase the value of the ASM_POWER_LIMIT parameter.
B.
Set the DISK_REPAIR_TIME disk attribute to a lower value.
C.
Specify the statement that adds the disk back to the disk group.
D.
Increase the number of ASMB processes.
E.
Increase the number of DBWR_IO_SLAVES in the ASM instance.
Explanation:
ASM_POWER_LIMIT specifies the maximum power on an Automatic Storage Management instance for disk
rebalancing. The higher the limit, the faster rebalancing will complete. Lower values will take longer, but
consume fewer processing and I/O resources.
Grouping operations in a single ALTER DISKGROUP statement can reduce rebalancing opera- tions.
http://docs.oracle.com/cd/E11882_01/server.112/e18951/asmdiskgrps.htm#OSTMG10070