Example of Verifying System Upgrade Readiness for Oracle RAC

You can verify that the permissions required for installing Oracle RAC have been configured on the nodes node1 and node2 by running the following command.

$ ./cluvfy stage -pre dbinst -upgrade 
-src_dbhome /u01/app/oracle/product/18.0.0/dbhome_1 
-dest_dbhome /u01/app/oracle/product/19.0.0/dbhome_1 
-dest_version 19.0.0.0.0 -fixup -verbose