User development, A new message was posted in the thread "Jboss is crashing and  throwing Out of swap space error.": http://community.jboss.org/message/519317#519317 Author : Peter Johnson Profile : http://community.jboss.org/people/peterj Message: -------------------------------------------------------------- Looking a little more carefully at the error message I notice that it is the compiler thread that is throwing the OOME. What is the size or the perngen? You might try increasing its max size, say to 512MB: -XX:MaxPermGen=512M   Also, I juts now read an aarticle about a new sysinternals tool: vmmap. You might try using that and see if it provides and other clues. -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/519317#519317