67 You are maintaining the SALES database. You have added a new disk to a disk group. Automatic Stor
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You are maintaining the SALES database. You have added a new disk to a disk group. Automatic Storage
Management performs the rebalancing activity. You want to speed up the rebalancing activity.
Which parameter should you specify to control the speed of the rebalancing activity?
A. ASM_POWER_LIMIT
B. ASM_DISKSTRING
C. ASM_DISKGROUPS
D. INSTANCE_TYPE
Correct Answer: A
Section: (none)
Explanation
Explanation/Reference:
Explanation:
You should use the ASM_POWER_LIMIT parameter to control the speed of the rebalancing activity. To
ensure that rebalancing operations do not interfere with the ongoing user I/O, the ASM_POWER_LIMIT
parameter controls the speed of rebalancing operations. The value for the ASM_POWER_LIMIT parameter
ranges from 0 to 11. The default value of 1 indicates low overhead. This is a dynamic parameter; therefore,
you can set this to a low value during the day and to a higher value overnight whenever a disk rebalancing
operation must occur. You can also control the speed of rebalancing by specifying a POWER clause in an
ALTER DISKGROUP statement or when rebalancing.
The option stating that the ASM_DISKSTRING parameter is used to control the speed of rebalancing is
incorrect. The ASM_DISKSTRING parameter specifies one or more strings, which are operating system
dependent, to limit the disk devices that can be used to create disk groups.
The option stating that the ASM_DISKGROUPS parameter is used to control the speed of rebalancing is
incorrect. The ASM_DISKGROUPS parameter specifies a list containing the names of the disk groups that
will be automatically mounted by the ASM instance at startup or by the ALTER DISKGROUP ALL MOUNT;
statement.
The option stating that the INSTANCE_TYPE parameter is used to control the speed of rebalancing is
incorrect. The INSTANCE_TYPE parameter identifies the instance as an ASM instance or non-ASM
instance. For an ASM instance, this parameter must be set to a value of ASM.
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