TruncateLogOnCheckpoint Property
The TruncateLogOnCheckpoint property configures automatic transaction log maintenance activity.
Applies To
| DBOption Object |
Syntax
object.TruncateLogOnCheckpoint [= value]
Parts
object
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);
Remarks
Periodically, and on certain user-directed actions, Microsoft® SQL Server™ 2000 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, forces 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.
Important Setting the TruncateLogOnCheckpoint property to TRUE implies that backup-maintained database integrity relies on backup of the database only. When TRUE, you cannot backup a database transaction log and backup strategies based on differential backup of the log are not available. For more information, see Setting Database Options.