USE [master]

GO

ALTER DATABASE TestDB SET RECOVERY SIMPLE WITH NO_WAIT

GO

ALTER DATABASE TestDB SET RECOVERY SIMPLE --简单模式

GO

--select * from sys.database_files

USE [TestDB]

GO

DBCC SHRINKFILE (N'TestDB_log' , 1, TRUNCATEONLY)

GO

USE [master]

GO

ALTER DATABASE TestDB SET RECOVERY FULL WITH NO_WAIT

GO

ALTER DATABASE TestDB SET RECOVERY FULL --还原为完全模式

GO