Hello there, well, I'm not an Oracle expert, but I'd like to know if is it possible to get working the above under RHEL5? As far as I know RAC is certified with GULM, but RHEL5's cluster doesn't have it. Have you ever used them successfully? Thanks, -- BÉRES László RHCE, RHCX senior IT engineer, trainer -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster