The best way to create a datasource is to: 1) Create a *-ds.xml file 2) Copy/move the file to the deploy directory In my build process, I have a generic *-ds.xml file that contains properties for various items. For example: <jndi-name>${db.datasource}</jndi-name> | <connection-url>${db.url.base}${db.database}</connection-url> Then in my Ant script, or properties file, I set the db.* properties and I copy the file as follows: <copy file="${db.dsxml}" | tofile="${dir.deploy}/${jboss.server}-${database.type}-ds.xml" | > | <filterchain> | <expandproperties /> | </filterchain> | </copy> My Ant script is set up to allow the MySQL, PostgreSQL or Hypersonic databases. Every aspect of the datasource is configurable from the database name down to the user name and password. I can easily switch from using PostgreSQL to MySQL - it is a one-line properties file change. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4171342#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...