OCP-1Z0-053-V12.02-136题

136.You issued the following command to mount the DATA disk group in restricted mode:

ALTER DISKGROUP data MOUNT RESTRICT;

What is the implication of this command?

A. The client RDBMS instance can access the file as a read-only file.

B. A new disk cannot be added to a disk group.

C. A disk in a disk group can be taken offline.

D. The client RDBMS instance cannot access the files in the disk group.

Answer: D

答案解析：

参考：http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_1007.htm#SQLRF52682

MOUNT Specify MOUNT to mount the disk groups in the local Automatic Storage Management instance. Specify ALL MOUNT to mount all disk groups specified in theASM_DISKGROUPS initialization parameter. File operations can only be performed when a disk group is mounted.

RESTRICTED | NORMAL Use these clauses to determine the manner in which the disk groups are mounted.

• In the RESTRICTED mode, the disk group is mounted in single-instance exclusive mode. No other ASM instance in the same cluster can mount that disk group. In this mode the disk group is not usable by any ASM client.

• In the NORMAL mode, the disk group is mounted in shared mode, so that other ASM instances and clients can access the disk group. This is the default.

  •