Hi, I use wsad4.0 to test my application. my database is oracle8i, i set oracle.jdbc.xa.client.OracleXADataSource as driver for the datasource. I use both cmp and jdbc in my application, seems whenever get to jdbc part, it throw out following error: com.ibm.ejs.cm.exception.WorkRolledbackException: Outstanding work on this connection which was not comitted or rolledback by the user has been rolledback. Anyone know this weird error, please shed some light. Thanks!