As Peter said, its better to try it against 4.2.x first. Also, | if (somethingGoesWrong()) { | sessionContext.setRollbackOnly(); | | //Then get connection to the DB | javax.sql.DataSource dataSource = ....; | java.sql.Connection con = dataSource.getConnection(); | | //and execute a query | ... | } How about re-ordering the statements? The sessionContext.setRollbackOnly() is going to mark the transaction for rollback. So why not get the datasource connection and run the query first (probably through a @RequiresNew transaction method) and then setRollbackOnly on the sessionContext. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4168282#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...