OCP-1Z0-053-V12.02-235题

235.The ORACLE_SID environment variable is set to +ASM. ASMLIB is not used in the configuration.

You executed the following command to startup the Automatic Storage Management (ASM) instance.

SQL> STARTUP;

Which two activities are performed during a successful start up operation? (Choose two.)

A. The databases configured to use the ASM instance are mounted

B. The disk groups are mounted as per the ASM_DISKGROUPS initialization parameter

C. ASM starts the Oracle Cluster Synchronization Services (CSS) daemon if it is not started

D. ASM discovers and examines the contents of all files that are in the paths specified in the

ASM_DISKGROUPS initialization parameters

Answer: BC

答案解析：

参考：

ASM启动时会加载磁盘组。

ASM是依赖于CSS守护进程的，因此在启动ASM实例前要确保css守护进程已经启动  。  CSS(Cluster Synchronization Services) 守护进程用来维持ASM 及客户端数据库实例间的一致性同步，如果是通过dbca建库的话，那么CSS守护进程默认即会启动(跟随系统reboot)。