How to check the RAC cluster status in Oracle

Baseline health check for an Oracle RAC cluster. crsctl stat res -t shows every resource and its state on each node, and the check commands verify the four core clusterware daemons are alive.

# All resources and their state per node
$GRID_HOME/bin/crsctl stat res -t

# Core clusterware daemons
$GRID_HOME/bin/crsctl check crs
$GRID_HOME/bin/crsctl check cssd
$GRID_HOME/bin/crsctl check crsd
$GRID_HOME/bin/crsctl check evmd