How to Start 11g R2 RAC Cluster

There are 2 methods.

Method 1:

1).Start the HAS (High Availability Service) on each node.

$ crsctl start has

2).To Start the Cluster on both the nodes.

$ crsctl start cluster –all

If OHASD is already running, you can start the Clusterware stack on any node from local node

Method 2:

1).Run the below command on each node. Starts both HAS and CRS

$ crsctl start crs

Noticed that just starting has also starts up the whole stack.