Sounds like you need a larger heap for JBoss AS than 512m to handle the 100MB file. Try increasing -Xmx (I would try -Xmx1024m). View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4230128#4230128 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4230128