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