You have verified that the NTP time server is accessible? David Fitzjarrell Principal author, "Oracle Exadata Survival Guide" On Tuesday, September 23, 2014 3:24 AM, Peter Dixon <peterdixon001@xxxxxxxxxxx> wrote: We are experiencing a clock drift on our 3 node OVM test database cluster. We are running RHEL 5.6 + OVM 3.2.8 , the time is polled from a master ntp source. Anybody had the same issue?