Oracle Cluster Start, Stop and Check Commands on 11g R2

Stop DB and CLUSTER

Stop DB                     (Run on only one node)
srvctl stop database -d  <SID>

Stop Cluster All        (Run on only one node)
crsctl stop cluster -all -f

Stop On Every Node
crsctl stop crs -f

Start DB and CLUSTER

Start On                (Run on every node)
crsctl start crs

Start DB               (Run on only one node)
srvctl start database -d  <SID>

Check DB and CLUSTER

Check All Cluster    (Run on only one node)
crs_stat -t

Check Cluster         (Run on every 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

Check SMON Process         (Run on every node)
ps -ef | grep smon
oracle    8334     1  0 Oct11 ?        00:00:01 asm_smon_+ASM1