Permgen memory leaks can cause those permgen OOM. One common cause is webapps not cleaning up after themselves on context shutdown. This leaks every loaded class from the webapp into the permgen whenever the application is unloaded.
Knowing this one can workaround these leaks by being careful with application redeploys, or restarting tomcat occasionally, if you can't locate and fix the leaks in the webapp. -----Original Message----- From: celtic man [mailto:[email protected]] Sent: Friday, 4 November 2011 4:26 a.m. To: [email protected] Subject: Tomcat OOM errors.. I see these errors(tomcat 6) : Exception in thread "http-bio-8080-exec-21" java.lang.OutOfMemoryError: PermGen space Exception in thread "com.mchange.v2.async.ThreadPoolAsynchronousRunner $PoolThread-#0" java.lang.OutOfMemoryError: PermGen space And checked the the JAVA parameters : CATALINA_OPTS=-Xmx4000M Do i need to change that to =-Xms2048M -Xmx2048M -XX:Permsize=512m - XX:MaxPermsize=512m ?? Anticipating a favorable reply. -- View this message in context: http://old.nabble.com/Tomcat-OOM-errors..-tp32773665p32773665.html Sent from the Tomcat - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
