The tin actually contains no specification to cover this - it only requires that the exception is thrown if the tx is marked for rollback, not if it's actually rolled back or rolling back. Basically the interface spec does not anticipate async rollback processing. I could close the JIRA as 'this is not a bug' until the spi javadoc is revised. Or in light of your comment here, I could throw away the JBossTS implementation of TransactionTimeoutConfiguration and nothing in the AS would break? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4137794#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...