--- a/server/session.py Fri Mar 22 20:05:49 2013 +0100 +++ b/server/session.py Fri Mar 22 19:58:43 2013 +0100 @@ -417,6 +417,7 @@ @property def _tx(self): + """default transaction for current session in current thread""" try: return self.__threaddata.tx except AttributeError: