Vacuum Element (ADF)

Contains settings used by the data removal process, which removes obsolete event and notification data from the application database.

Синтаксис

<ApplicationExecutionSettings>
    ...
    <Vacuum>

Element Characteristics

Characteristic	Description
Data type	None.
Default value	None.
Occurrence	Optional once per ApplicationExecutionSettings element.
Updates	Can be added and deleted when updating the application.

Element Relationships

Relationship	Elements
Parent element	ApplicationExecutionSettings Element (ADF)
Child elements	RetentionAge Element (ADF) VacuumSchedule Element (ADF)

Замечания

Vacuuming removes obsolete event and notification data from the application database. For more information about the vacuuming process, see Удаление устаревших данных приложения.

Vacuuming schedules cannot overlap. If schedules overlap, Notification Services stops the earlier vacuuming process before the later one starts.

If you omit the Vacuum element and its child elements, the vacuuming process does not run and obsolete data is not automatically removed from the application database.

Пример

The following example shows how to define a data retention age of three days (P3DT00H00M00S) and to configure the vacuuming process to run from 3:00 A.M. to 5:00 A.M. (UTC) and from 11:00 P.M. to 1:00 A.M. (UTC) every day.

<Vacuum>
    <RetentionAge>P3DT00H00M00S</RetentionAge>
    <VacuumSchedule>
        <Schedule>
            <StartTime>23:00:00</StartTime>
            <Duration>P0DT02H00M00S</Duration>
        </Schedule>
        <Schedule>
            <StartTime>03:00:00</StartTime>
            <Duration>P0DT02H00M00S</Duration>
        </Schedule>
    </VacuumSchedule>
</Vacuum>

См. также

Справочник

Application Definition File Reference

Другие ресурсы

Настройка удаления данных
Обновление экземпляров и приложений

Справка и поддержка

Получение помощи по SQL Server 2005