What Oracle version? 32 or 64 bit kernel? What kernel version? How much memory on the box? How much are you allocating to SGA(s)? Are you configuring hugepages? Any activities other than running database instance(s)? -Mark -- Mark J. Bobak Senior Database Administrator, System & Product Technologies ProQuest 789 E. Eisenhower, Parkway, P.O. Box 1346 Ann Arbor MI 48106-1346 +1.734.997.4059 or +1.800.521.0600 x 4059 mark.bobak@xxxxxxxxxxxx<mailto:mark.bobak@xxxxxxxxxxxxxxx> www.proquest.com<http://www.proquest.com> www.csa.com<http://www.csa.com> ProQuest...Start here. From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Howard Latham Sent: Thursday, October 16, 2008 5:51 PM To: oracle-l-freelists Subject: Redhat EL 5 According to Redhat you don't need to use the huge kernel in RHEL5 (there doesnt seem to be one anymore) as PAE takes care. I get the same oom killer problem as low memory runs out and OOM Killer kills the database anybody got any ideas? -- Howard A. Latham