In the server.log file, was there a shutdown message like the following: 2008-10-22 11:27:18,253 INFO [org.jboss.system.server.Server] Shutting down the server, blockingShutdown: false 2008-10-22 11:27:18,269 INFO [org.jboss.system.server.Server] Server exit(0) called 2008-10-22 11:27:18,269 INFO [org.jboss.system.server.Server] Runtime shutdown hook called, forceHalt: true 2008-10-22 11:27:18,269 INFO [org.jboss.system.server.Server] JBoss SHUTDOWN: Undeploying all packages If there was, then something is signaling the app server to shut down. If not, then either the JVM is crashing or something else in the operating system is forcefully terminating the process. How is the app server being started? Others have started using a remote shell and have had the app server terminate when closing the shell. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4184517#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...