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TruncateLogOnCheckpoint Property

未來的 Microsoft SQL Server 版本將移除這項功能。請避免在新的開發工作中使用這項功能，並規劃修改目前使用這項功能的應用程式。

The TruncateLogOnCheckpoint property configures automatic transaction log maintenance activity.

語法

object
.TruncateLogOnCheckpoint [= value]

Parts

  • object
    An expression that evaluates to an object in the Applies To list

  • value
    TRUE or FALSE

Data Type

Boolean

Modifiable

Read/write

Prototype (C/C++)

HRESULT GetTruncateLogOnCheckpoint(LPBOOL pRetVal);
HRESULT SetTruncateLogOnCheckpoint(BOOL NewValue);

備註

Periodically, and on certain user-directed actions, Microsoft SQL Server forces a write of dirty pages, ensuring data integrity at a point in time. The recovery interval option configures periodic dirty page writes. The Transact-SQL statement CHECKPOINT and other user-directed actions, such as initiating a complete database backup, force a dirty page write.

If TRUE, SQL Server removes log entries referencing committed transactions when activity on the database forces a dirty page write.

If FALSE, the forced dirty page writes have no effect on the database transaction log.

重要事項重要事項

Setting the TruncateLogOnCheckpoint property to TRUE implies that backup-maintained database integrity relies on backup of the database only. If TRUE, you cannot back up a database transaction log, and backup strategies based on differential backup of the log are not available. For more information, see 設定資料庫選項.

Applies To:

DBOption Object