Hi, 'LOGOFF BY CLEANUP' occurs when a session hasn't explicitly closed the connection & Oracle has to clean the session up itself. Sounds like your new server is behind a firewall that drops connections after 2 hours, causing the above. Talk to your network admins and ask what network hardware is between the app and database server. Thanks, Phil On Thu, Nov 28, 2013 at 7:19 PM, Maureen English <maureen.english@xxxxxxxxxx > wrote: > We have an application that has been using a 10g database for years. We > just > created a new 11.2.0.4 RAC database on a new RHEL5 Linux server. > > The audit trail, however, shows the last > entry for that user as doing a 'LOGOFF BY CLEANUP'. I'm 95% sure that > there had > been no communication between the application and the database for this > user for > the 2 hours before it disappeared...I was monitoring netstat output and > the audit trail. > > I'm also sure that this is related to either some kind of timeout on the > new database > server, or some kind of timeout in the database. IDLE_TIME for the > profile is set to > UNLIMITED, so it's not that. No alert log info and no trace file info to > show anything > is wrong. > > It really looks like something is killing the Oracle process, but I don't > know where > else to look. Is there some kind of system parameter that may have been > set that > kills processes that are essentially inactive? > > - Maureen > >