240.You are managing an Oracle Database 11g ASM instance with a disk group dg01 having three disks.
One of the disks in the disk group becomes unavailable because of power failure. You issued the
following command to change the DISK_REPAIR_TIME attribute from 3.6 hours to 5 hours:
ALTER DISKGROUP dg01 SET ATTRIBUTE 'disk_repair_time' = '5h';
To which disks in the disk group will the new value be applicable?
A. all disks in the disk group
B. all disks that are currently in OFFLINE mode
C. all disks that are not currently in OFFLINE mode
D. all disks in the disk group only if all of them are ONLINE
Answer: C
答案解析：
参考：http://docs.oracle.com/cd/E11882_01/server.112/e10803/config_storage.htm#HABPT4818
Set the DISK_REPAIR_TIME Disk Group Attribute Appropriately
The DISK_REPAIR_TIME disk group attribute specifies how long a disk remains offline before Oracle ASM drops the disk. If a
disk is made available before theDISK_REPAIR_TIME parameter has expired, the storage administrator can issue the ONLINE DISK command and Oracle ASM resynchronizes the stale data from the mirror side. In Oracle Database 11g,
the online disk operation does not restart if there is a failure of the instance on which the disk is running. You must reissue the command manually to bring the disk online.
You can set a disk repair time attribute on your disk group to specify how long disks remain offline before being dropped. The appropriate setting for your environment depends on how long you expect a typical transient type of failure to persist.
Set the DISK_REPAIR_TIME disk group attribute to the maximum amount of time before a disk is definitely considered to be out of service.