OCP-1Z0-053-200题-78题-655
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QUESTION 78
Examine the following ALTER command:
SQL> ALTER DISKGROUP dgroup1 UNDROP DISKS;
What is the purpose of the command?
A. It cancels all pending disk drops within the disk group.
B. It restores disks that are being dropped as the result of a DROP DISKGROUP operation
C. It mounts disks in the disk group for which the drop-disk operation has already been completed
D. It restores all the dropped disks in the disk group for which the drop-disk operation has already been
completed
E. It adds previously dropped disks back into the disk group
Answer: A
同655题:http://blog.csdn.net/rlhua/article/details/14557323
Explanation/Reference:
Section: Backup, Recovery & Recovery Manager (RMAN)
The UNDROP DISKS clause of the ALTER DISKGROUP statement allows pending disk drops to be undone. It
will not revert drops that have completed, or disk drops associated with the dropping of a disk group.
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