适用于SQL Server 2005的方法
Backup Log DNName WITH no_log
GO
DUMP TRANSACTION DNName WITH no_log
GO
USE DNName
DBCC SHRINKFILE (2)
GO
适用于SQL Server 2008的方法
USE [master]
GO
ALTER DATABASE DNName SET RECOVERY SIMPLE WITH NO_WAIT
GO
ALTER DATABASE DNName SET RECOVERY SIMPLE --简单模式
GO
USE DNName
GO
DBCC SHRINKFILE (N'DNName_Log' , 11, TRUNCATEONLY)
GO
USE [master]
GO
ALTER DATABASE DNName SET RECOVERY FULL WITH NO_WAIT
GO
ALTER DATABASE DNName SET RECOVERY FULL --还原为完全模式
GO