Oracle Cluster Verification Utility

Oracle provides Cluster node verification prior to installation. It is very helpful for Oracle RAC pre-installation to check the nodes meeting the system minimum requirement, the network interfaces availability, the patches update and etc.

Oracle Grid pre-installation
To verify whether your system meets all of the criteria for an Oracle Clusterware installation:
Window:

cluvfy stage -pre crsinst -n node1,node2,node3

Unix:

runcluvfy.sh stage -pre crsinst -n node1,node2,node3

After you have completed phase one, verify that Oracle Clusterware is functioning properly before proceeding with phase two of your Oracle RAC installation:
Window:

cluvfy stage -post crsinst -n node1,node2,node3 -v

Unix:

runcluvfy.sh stage -post crsinst -n node1,node2,node3 -v

To verify whether your system meets all of the criteria for an Oracle RAC installation:
Window:

cluvfy stage -pre dbinst -n node1,node2,node3 -v 

Unix:

Oracle Database pre-installation

To verify whether your system meets all of the criteria for creating a database or for making a database configuration change:

Window:

cluvfy stage -pre dbcfg -n -n node1,node2,node3 -d oracle_home -v

Unix:

runcluvfy.sh stage -pre dbcfg -n -n node1,node2,node3 -d oracle_home -v

Refer to Cluster Verification Utility Reference for more detail explanation.

runcluvfy.sh stage -pre dbinst -n node1,node2,node3 -v