Actually that depends exactly what version of the server you are running and what the transaction encompasses. JBM has its own recovery module, but it's not enabled by default. The JCA used for database connections also has one, but it's only bundled in recent versions of the EAP and even then it's not turned on by default. In short, you probably don't need to write one, but you do need to hunt down one or two existing ones and wire them up. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4162553#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...