Thanks for all your help, especially Romain ... I have now resolved the issue. For reference
(1) persistence resource and datasource id must be the same (2) When running in Eclipse make sure that you follow the advanced set-up here <http://tomee.apache.org/tomee-and-eclipse.html> - Eclipse uses local copies of tomee.xml which are not updated automatically (unless configured to do so) when you update your /install/tomee/conf/tomee.xml (3) JMX is useful for debugging. You should launch using jconsole and look for your dataSource under openejb.managed - if it is not there then there is something wrong Onwards, and upwards ! -- View this message in context: http://openejb.979440.n4.nabble.com/Unable-to-configure-MYSQL-resource-in-tomee-xml-tp4659538p4659652.html Sent from the OpenEJB User mailing list archive at Nabble.com.
