This is not a bug. You're trying to access multiple one phase resources in a single transaction. This was allowed with the old transaction manager, but it's not allowed in the new one. It is possible to set a property in the transaction service to allow multiple one phase resources, but that could lead to transaction problems. Better use two phase resources. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4048999#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...