&quot;alex.loubyansky(a)jboss.com&quot; wrote : | E.g. track-connection-by-tx in the schema is of boolean type and must always be present. | track-connection-by-tx is the dtd is declared as EMPTY but must always be present! | So, it seems like none of them was actually used (or used only when it didn't fail)? | I would fix the track-connection-by-tx in the current versions of schema and dtd then create another version of both w/o track-connection-by-tx but with interleaving. Does this sound right to everybody? We don't validate against the dtd because we can't validate the embedded mbeans https://jira.jboss.org/jira/browse/JBAS-460 I'd just leave <track-connection-by-tx/> in there as optional (and ignored) and add the additional optional <interleaving/> If you're going to create a new version of the dtd then call it jboss-ds_5_0.dtd this file has nothing to do with the JCA spec version. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4172551#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...