You are more than likely running out of memory. You won't see the warning any more - it has been removed. You should get an OutOfMemoryError in the logs using the Sun VM, although I have found that for some people running on JRockit they don't get this. You need to tune the paging params appropriately to avoid running out of memory. See user guide for details. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965679#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...