Check the MySQL JDBC JAR file and look at the full package names of the drivers, maybe there is an extra one. Where did you get this JAR file? My driver comes from the Maven repository, it's been years since I obtained the driver from the MySQL web site. Currently, com.mysql.jdbc.Driver class is the recommended driver, but org.gjt.mm.mysql.Driver is still retained for backwards compatibility. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4242015#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...