SELECT VoVehicleCategory.NAME,
       VoVehicleCategory.VO_VEHICLE_CATEGORY_ID,
       VoVehicleCategory.VEHICLE_OWNER_ID,
       VoVehicleCategory.GRAPHICAL_SYMBOL,
       GuVehicleOwner.GU_VEHICLE_OWNER_ID,
       GuVehicleOwner.GUI_USER_ID
FROM VO_VEHICLE_CATEGORY VoVehicleCategory,
      (SELECT *  FROM gu_vehicle_owner
                     WHERE gui_user_id = ?
                       AND vehicle_owner_id = ?) GuVehicleOwner
WHERE VoVehicleCategory.VO_VEHICLE_CATEGORY_ID = GuVehicleOwner.VO_VEHICLE_CATEGORY_ID(+)
AND VoVehicleCategory.vehicle_owner_id = ?
AND NVL(VoVehicleCategory.is_object,'N') = 'N'
ORDER BY 1