Dumb question and not trying to be a jerk, but why do you have to wait until deployment time? Who is the 'other products'? So if I understand you correctly, you only supply the component and otherwise have zero access or control over the rest of the jboss? Then that is not so good ;) My original idea was to have you hardcode your jndi source name and then add a *-ds.xml to the deployment. A brute force might be to write your own *-ds.xml into the deploy dir, but I have no idea if that is even possible. I have similar issues, but I need to switch data sources at runtime. I think we need some kind of dynamic data source system. Sorry for the lack of help. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4138880#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...