Hello, In our project, we have defined a datasource using no-tx-datasource. A client component does a remote call to a session bean method declared with <trans-attribute>Required</trans-attribute> In this session bean method, the datasource (no-tx) is obtained through JNDI, a connection is used to create a statement and call to s.executeUpdate is done. We expected JBoss to be very noisy/angry about the Required-transaction method using a no-tx-datasource. But nothing happened, can you explain ? please. Thanks. Denis. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989222#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...