In a clustered Oracle ASM environment, a diskgroup is mounted in restricted mode. Which
statement is correct?
A.
You can mount the disk group on all the nodes.
B.
You can issue any command, as long as you are using the force option.
C.
You can open the database located on this disk group only in standalone mode.
D.
You can open the database on this disk group only in restricted mode.
E.
You know that nobody is using the disk group, so you can perform a fast rebalancing on the disk
group.
E >>>>>
When you mount a disk group in RESTRICTED mode, the disk group can only be mounted by one instance. Clients of ASM on that node cannot access that disk group while the disk group is mounted in RESTRICTED mode. The RESTRICTED mode enables you to perform maintenance tasks on a disk group in the ASM instance without interference from clients.
Rebalance operations that occur while a disk group is in RESTRICTED mode eliminate the lock and unlock extent map messaging that occurs between ASM instances in an Oracle RAC environment. This improves the overall rebalance throughput. At the end of a maintenance period, you must explicitly dismount the disk group and remount it in normal mode