We have manually defined our regions in this file - of which there were 50 altogether. We will attempt to optimise this solution by editing our code so that we can define multiple entities in different regions - as placing 50 entries in the file has led to us not being able to start up JBoss every now and then - it seems it times out and throws an 'Unsupported Operation' exception. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4193356#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...