630         # execute the plan

   630         # execute the plan

   631         try:

   631         try:

   632             results = plan.execute()

   632             results = plan.execute()

   633         except (Unauthorized, ValidationError):

   633         except (Unauthorized, ValidationError):

   634             # getting an Unauthorized/ValidationError exception means the

   634             # getting an Unauthorized/ValidationError exception means the

   636             #

   636             #

   637             # notes:

   637             # notes:

   638             # * we should not reset the connections set here, since we don't want the

   638             # * we should not reset the connections set here, since we don't want the

   639             #   session to loose it during processing

   639             #   session to loose it during processing

   640             # * don't rollback if we're in the commit process, will be handled

   640             # * don't rollback if we're in the commit process, will be handled