Oracle RAC中停止has、crs、cluster的区别

1.首先介绍一下这3个服务

Has：是高可用服务，用在restart环境，可以是单机环境也可以是RAC环境，不管单机环境还是RAC环境，都可以执行crsctl check has，在RAC环境下，可以简单理解成cluster的一部分。
crs：是集群就绪服务，用在RAC环境，单机环境不能执行crsctl check crs，crsctl start crs不单单启动CRSD了，等于启动OHASD、CRSD、CSSD三者了。
cluster：就是集群的意思，用在RAC环境，单机环境不能执行crsctl check cluster。

2.通过命令查看has、crs、cluster管理的内容

[root@nxybj1 ~]# crsctl check has

CRS-4638: Oracle High Availability Services is online

[root@nxybj1 ~]# crsctl check crs

CRS-4638: Oracle High Availability Services is online

CRS-4537: Cluster Ready Services is online

CRS-4529: Cluster Synchronization Services is online

CRS-4533: Event Manager is online

[root@nxybj1 ~]# crsctl check cluster

CRS-4537: Cluster Ready Services is online

CRS-4529: Cluster Synchronization Services is online

CRS-4533: Event Manager is online

这里可以看到，crs管理的内容是has管理的内容和cluster管理的内容。

3.分别执行3条命令查看结果显示

3.1 停止cluster服务

root@nxybj1 ~]# crsctl stop cluster

CRS-2673: Attempting to stop ‘ora.crsd’ on ’nxybj1′

CRS-2790: Starting shutdown of Cluster Ready Services-managed resources on ’nxybj1′

CRS-2673: Attempting to stop ‘ora.LISTENER.lsnr’ on ’nxybj1′

CRS-2673: Attempting to stop ‘ora.LISTENER_SCAN1.lsnr’ on ’nxybj1′

CRS-2673: Attempting to stop ‘ora.CRS.dg’ on ’nxybj1′

CRS-2673: Attempting to stop ‘ora.power.db’ on ’nxybj1′

CRS-2677: Stop of ‘ora.LISTENER.lsnr’ on ’nxybj1′ succeeded

CRS-2673: Attempting to stop ‘ora.nxybj1.vip’ on ’nxybj1′

CRS-2677: Stop of ‘ora.LISTENER_SCAN1.lsnr’ on ’nxybj1′ succeeded

CRS-2673: Attempting to stop ‘ora.scan1.vip’ on ’nxybj1′

CRS-2677: Stop of ‘ora.scan1.vip’ on ’nxybj1′ succeeded

CRS-2672: Attempting to start ‘ora.scan1.vip’ on ’nxybj2′

CRS-2677: Stop of ‘ora.nxybj1.vip’ on ’nxybj1′ succeeded