When VCS is started, it checks the state of its local configuration file and registers with GAB for cluster membership. If the local configuration is valid, and if no other system is running VCS, it builds its state from the local configuration file and enters the running state.
If the configuration on all nodes is invalid, the VCS engine waits for manual intervention, or for VCS to be started on a system that has a valid configuration.
See Cluster and system states.
To start VCS
To start VCS when all systems are in the ADMIN_WAIT state
To start VCS on a single node
To start VCS as a time-sharing process