执行如下SQL:

USE [master]
 GO
    ALTER DATABASE [DATA-BASE-NAME] SET RECOVERY SIMPLE WITH NO_WAIT
    GO
    ALTER DATABASE [DATA-BASE-NAME] SET RECOVERY SIMPLE   --简单模式
    GO
    USE [DATA-BASE-NAME]
    GO
    DBCC SHRINKFILE (N'DATA-BASE-Log-NAME' , 11, TRUNCATEONLY)
    GO
 
 USE [master]
 GO
 ALTER DATABASE [DATA-BASE-NAME] SET RECOVERY FULL WITH NO_WAIT
 GO
   
 ALTER DATABASE [DATA-BASE-NAME] SET RECOVERY FULL --还原为完全模式
 GO