Thanks you guys were right on about that, firewall was blocking NTP sync. I am a bit sketchy on some of this "cloud" stuff because while I can see my servers I have no access to the servers hosting our environments. I experienced the hang (about 60 seconds everything locked up) right after the admin moved the VM to a new host (live) and then when it came back the DB was kaput. arc error. Not sure if it was the move or the hang or what, apparently these things get moved all the time for load balancing and we haven't seen any crashes before. ARC0: terminating instance due to error 472 Errors in file /.../_ora_28944.trc: ORA-00472: PMON process terminated with error Instance terminated by ARC0, pid = 5784 Long day :) On Tue, Sep 29, 2009 at 11:35 PM, Matthew Zito <mzito@xxxxxxxxxxx> wrote: > > >