Is it possible to create an EntityManager at run time just by specifying database connection? I know that I can create an entitymanager just by specifying persistenceUnitName that is already configured in my oracle-ds.xml file. However, in this case I would like to add a new entry to oracle-ds.xml file at run time from params provided by the client Thanks, View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4029560#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...