log.debug("start called: " + id);
if (log!=null) log.debug("start called: " + id);
    public void start(Xid id, int flags) throws XAException {        log.debug("start called: " + id);        if (currentTr != null) {            throw new XAException("start called with transaction associated");        }        findIscTrHandle(id, flags);    }