Two important Command . Crsctl and Srvctl.
Crsctl commands. Manage clusterware related operations
start-stop cluster
Srvctl commands. manage Oracle related operations.
start-stop instances and services
Start or stop Oracle Clusterware on a specific node:
crsctl start cluster
crsctl stop cluster
Determine the overall health on a specific node:
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
Determine the location of the voting disk:
crsctl query css votedisk
crsctl query crs activeversion
Oracle Clusterware active version on cluster is [11.2.0.1.0]
Stop the Oracle Clusterware stack on all nodes:
crsctl stop cluster -all
Determine the list of interfaces available to the cluster:
oifcfg iflist –p -n
Stop Clusterware on all nodes:
crsctl stop crs
Start Clusterware on all nodes:
crsctl start crs
View SCAN VIP configuration
srvctl config scan
View SCAN LISTENER configuration
srvctl config scan_listener
grid@host01 bin$ ./crsctl stat res -t
You can view resource name , target,state,status
Start and Stop Asm instances
$ srvctl start asm -n host01
$ srvctl status asm -n host01
ASM is running on host01.
$ srvctl stop asm