Hi everybody, I've been surfing the web for the 'CONNECTION NOT BOUND' error and its everywhere, but without a clean solution. I've tried every combination without success. I'm using spring 2.5, hibernate 3.2 with JPA. My config files are as follows: Spring: | <jee:jndi-lookup id="dataSource" jndi-name="Oracle" | resource-ref="false"/> | web.xml | <resource-ref> | <res-ref-name>OracleDS</res-ref-name> | <res-type>javax.sql.DataSource</res-type> | <res-auth>Container</res-auth> | </resource-ref> | JBoss: | <jboss-web> | <resource-ref> | <res-ref-name>OracleDS</res-ref-name> | <res-type>javax.sql.DataSource</res-type> | <jndi-name>java:OracleDS</jndi-name> | </resource-ref> | </jboss-web> In the jmx-console: +- OracleDS (in java: namespace) I'am using Oracle 10g. It works fine in Jboss 4.0.5 and Tomcat 5.5.20, but fails on Jboss 4.0.4 and JBoss 4.2.2. I don't understand how a simple thing like JNDI lookup can bring such a storm of confusion. Thank you very much. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4142010#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...