In some cases it may be desirable to restart all nodes of the cluster simultaneously instead of rebooting them one by one.
Note: Do not reboot all nodes simultaneously using reboot or flashgrid-node reboot command. This may lead to CRS failure to start if one node goes down when CRS is already starting on another node.
To restart the entire cluster
Stop all running databases.
Stop Oracle cluster services on all nodes.
# crsctl stop cluster -all
Power all nodes off.
Start all nodes