Which of the following ALTER DISKGROUP commands does not use V$ASM_OPERATION to record thestatus of the operation?（）

A. ADD DIRECTORY
B. DROP DISK
C. RESIZE DISK
D. REBALANCE
E. ADD FAILGROUP

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单项选择题

In what order would you execute the following steps to create a recovery catalog？（）
a.Issue the create catalog command.
b.Create the recovery-catalog database.
c.Create the recovery-catalog user.
d.Grant the recovery_catalog_owner privilege to the recovery-catalog user.
e.Issue the register database command from the target database.

A.a，b，c，d，e
B.b，a，d，c，e
C.b，c，d，a，e
D.b，c，d，e，a
E.b，d，c，a，e

单项选择题

When starting up your ASM instance, you receive the following error:

What is the cause of the error?（）

A. The ASM_DISKGROUPS parameter is configured for three disk groups: DGROUP1, DGROUP2, and DGROUP3. The underlying disks for these disk groups have apparently been lost.
B. The format of the ASM_DISKGROUPS parameter is incorrect. It should reference the disk group numbers, not the names of the disk groups
C. The ASM_POWER_LIMIT parameter is incorrectly set to 1. It should be set to the number of disk groups being attached to the ASM instance.
D. The ASM_DISKSTRING parameter is not set; therefore disk discovery is not possible.
E. There is insufficient information to solve this problem.

单项选择题

What is the default AU size of an ASM disk group? What is the maximum AU size in an ASM disk group?（）

A. 100KB default, 10TB maximum
B. 256KB default, 1024MB maximum
C. 10MB default, 126PB maximum
D. 64KB default, 1EB maximum
E. 1MB default, 64MB maximum

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