I guess your configuration is not correct. Maybe you use custom driver URL but using oracle template ds.xml. anonymous wrote : | org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (java.sq | l.SQLException: Invalid Oracle URL specified: OracleDataSource.makeURL) | at org.jboss.resource.adapter.jdbc.xa.XAManagedConnectionFactory.createManagedConnection(XAManagedC | onnectionFactory.java:155) | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4231585#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...