The oracle-ds.xml file is still needed, the one described in Developer's Notebook is probably still accurate (no major changes have gone into *-ds.xml files since 4.0). You should look into using JPA (EJB3-style entity beans) for your database access. Not sure of the exact steps to do this using Tools. Do you have an existing database schema, or will you be generating the schema based on your persistent objects? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4253121#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...