I mean that the Resource-name('myDB') is mapped on a datasource ear-wide. First I thought you can make this in a jboss-app.xml or applikation.xml like you can do that in a jboss-web.xml but that doesnt work. My problem is, I would like to avoid to build a deployment descriptor for twenty or more beans in an applikation. With my beans I want to make up reusable code. So I decided, that every datasource gets the name 'myDB' and is mapped to the global jndi-name 'java:/MyDefaultDS'. Now I have the problem that more than one applikation is deployed on a server with different databases. I can manage this with a deployment descriptor in each bean but that is to complicated. I hope the problem is more perspicuous even if my english is a disaster. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4107204#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...