jboss version: JBOSS 4.0.5GA. After our application set up three persistence units, we got the following warning at run time: WARN [TxConnectionManager] Prepare called on a local tx. Use of local transactions on a jta transaction with more than one branch may result in inconsistent data in some cases of failure. What does this warning mean? how to get rid of it? Thanks for help. dave View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4227169#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...