Hi I am a connection using data source @Resource (mappedName="java:/OracleDS") protected DataSource oracleDS; oracleDS.getConnection(); when i close the connection(connection.close()) i can not use my entity manager. I get "ResourceException: Transaction is not active". apparantly when i close the connection, my entity manager connection is also closed. how can I use JDBC connection, open and close it and still use entity manager. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4084811#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...