540.Which of the following ALTER DISKGROUP commands does not use V$ASM_OPERATION to
record the status of the operation?
A. ADD DIRECTORY
B. DROP DISK
C. RESIZE DISK
D. REBALANCE
E. ADD FAILGROUP
Answer: A
答案解析：
参考：http://blog.csdn.net/rlhua/article/details/12972983
V$ASM_OPERATION是记录当前磁盘的操作信息。
B,C,D,E都会涉及到磁盘的操作，只有A是涉及目录的操作，所以选A