Hi vicky, i've read something on google...if i don't use hypersonic, i must change my conf file ?? My conf directory is standardjaws.xml server.policy login-config.xml jndi.properties jbossmq-state.xml jboss-minimal.xml jboss-service.xml standardjbosscmp-jdbc.xml log4j.xml standardjboss.xml I must change "DefaultDS" (in standardjbosscmp-jdbc.xml or onother file) to oracle-ds ??? Thanks a lot Davide View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4133261#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...