User development, A new message was posted in the thread "Out of memory occured on servlet.service()": http://community.jboss.org/message/527800#527800 Author : Richard Opalka Profile : http://community.jboss.org/people/richard.opalka@jboss.com Message: -------------------------------------------------------------- Hi Doochul,      I highly recomend you to upgrade to AS 5.1.0.GA. There were many performance and memory leak fixes lately that might be blocking you. The most relevant one is: https://jira.jboss.org/jira/browse/JBWS-2486 -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/527800#527800