INS-41902
The Oracle Grid Infrastructure Typical installation cannot be performed on this system.
Cause
Oracle RAC 9i release 9.x is already installed on this server. The Oracle Grid Infrastructure Typical installation is a simplified configuration that is not designed to support older versions of Oracle RAC.
Action
Select Advanced Installation for Oracle Grid Infrastructure. This option allows you to specify configuration information required for Oracle Clusterware to operate with Oracle RAC release 9.x.