An important thing I forgot to mention: Option D also runs slow from time to time when JBoss is running on the same machine as the database! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4149034#4149034 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4149034