IDC资讯中心
把下面的代码粘贴到sql query analyzer（查询分析器）里执行即可（注意修改红色部分的3个参数）：
set nocount ondeclare @logicalfilename sysname,@maxminutes int,@newsize int
use dicky –需要缩小日志的数据库名select @logicalfilename = dicky_log, –日志文件的逻辑名，非物理文件名@maxminutes = 10, — limit on time allowed to wrap log.@newsize = 2 –需要重新设定的日志文件的大小(单位:m)，此值必须小于原先文件大小
— setup / initializedeclare @originalsize intselect @originalsize = size from sysfileswhere name = @logicalfilenameselect original size of + db_name() + log is + convert(varchar(30),@originalsize) + 8k pages or + convert(varchar(30),(@originalsize*8/1024)) + mbfrom sysfileswhere name = @logicalfilenamecreate table dummytrans(dummycolumn char (8000) not null)
declare @counter int,@starttime datetime,@trunclog varchar(255)select @starttime = getdate(),@trunclog = backup log + db_name() + with truncate_only
dbcc shrinkfile (@logicalfilename, @newsize)exec (@trunclog)– wrap the log if necessary.while @maxminutes > datediff (mi, @starttime, getdate()) — time has not expiredand @originalsize = (select size from sysfiles where name = @logicalfilename) and (@originalsize * 8 /1024) > @newsize begin — outer loop.select @counter = 0while ((@counter < @originalsize / 16) and (@counter < 50000))begin — updateinsert dummytrans values (fill log) delete dummytransselect @counter = @counter + 1end exec (@trunclog) end select final size of + db_name() + log is +convert(varchar(30),size) + 8k pages or + convert(varchar(30),(size*8/1024)) + mbfrom sysfiles where name = @logicalfilenamedrop table dummytransset nocount off
