USE w9157 select * from sys.database_files --查询Log名称 ALTER DATABASE w9157 SET RECOVERY SIMPLE WITH NO_WAIT ALTER DATABASE w9157 SET RECOVERY SIMPLE --简单模式 DBCC SHRINKFILE (N'log' , 11, TRUNCATEONLY) -- 11是大小 11M ALTER DATABASE w9157 SET RECOVERY FULL WITH NO_WAIT ALTER DATABASE w9157 SET RECOVERY FULL