江西广告网
标题:
如何缩小SQL SERVER日志文件
[打印本页]
作者:
有梦好甜蜜
时间:
2009-2-7 10:44
标题:
如何缩小SQL SERVER日志文件
前几天也碰到日志文件过大的问题,数据库实际大小为600M, 日志文件实际大小为33M, 但日志文件占用空间为2.8G!!! 试了多种方式,SHIRNK DATABASE, TRUNCATE LOG FILE, 都没办法将文件缩小。无论如何,这应该算SQL SERVER的一个BUG吧。 后来找到下面的代码,就可以将日志文件缩小到自己想要的大小了。把代码COPY到查询分析器里,,然后修改其中的3个参数(数据库名,日志文件名,和目标日志文件的大小),运行即可(我已经用过多次了) ----- SET NOCOUNT ON DECLARE @LogicalFileName sysname, @MaxMinutes INT, @NewSize INT USE Marias -- 要操作的数据库名 SELECT @LogicalFileName = 'Marias_log', -- 日志文件名 @MaxMinutes = 10, -- Limit on time allowed to wrap log. @NewSize = 100 -- 你想设定的日志文件的大小(M) -- Setup / initialize DECLARE @OriginalSize int SELECT @OriginalSize = size FROM sysfiles WHERE name = @LogicalFileName SELECT 'Original Size of ' db_name() ' LOG is ' CONVERT(VARCHAR(30),@OriginalSize) ' 8K pages or ' CONVERT(VARCHAR(30),(@OriginalSize*8/1024)) 'MB' FROM sysfiles WHERE name = @LogicalFileName CREATE 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 expired AND @OriginalSize = (SELECT size FROM sysfiles WHERE name = @LogicalFileName) AND (@OriginalSize * 8 /1024) > @NewSize BEGIN -- Outer loop. SELECT @Counter = 0 WHILE ((@Counter < @OriginalSize / 16) AND (@Counter < 50000)) BEGIN -- update INSERT DummyTrans VALUES ('Fill Log') DELETE DummyTrans SELECT @Counter = @Counter 1 END EXEC (@TruncLog) END SELECT 'Final Size of ' db_name() ' LOG is ' CONVERT(VARCHAR(30),size) ' 8K pages or ' CONVERT(VARCHAR(30),(size*8/1024)) 'MB' FROM sysfiles WHERE name = @LogicalFileName DROP TABLE DummyTrans SET NOCOUNT OFF <
欢迎光临 江西广告网 (http://bbs.jxadw.com/)
Powered by Discuz! X3.2