If you want to configure VCS such that Oracle starts with a specified Pfile, modify the main.cf file for the Oracle group as follows:

Oracle ora1 (
                Sid @system01 = vrts1
                Sid @system02 = vrts2
                Owner = oracle
                Home = "/app/oracle/orahome"
                StartUpOpt = SRVCTLSTART
                ShutDownOpt = SRVCTLSTOP
                pfile="/app/oracle/orahome/dbs/initprod1.ora"
                )