SqlServer 2008 R2 日志文件过大，清理方式

    USE [master]
    GO
    ALTER DATABASE DbName SET RECOVERY SIMPLE WITH NO_WAIT
    GO
    ALTER DATABASE DbName SET RECOVERY SIMPLE   --简单模式
    GO
    USE DbName 
    GO
    DBCC SHRINKFILE (N'DbName_Log' , 11, TRUNCATEONLY)
    GO
    USE[master]
    GO

    ALTER DATABASE DbName SET RECOVERY FULL WITH NO_WAIT

    GO

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

    GO
  

将以上的”DbName”替换成你需要清理日志文件对应的数据库