SQL 日志清除常用的方法总结
文章总结了多种SQL 日志清除常用的方法,有需要的朋友可参考一下本文章。
1 首先确认的是你能直接删除,他们是SQL SERVER 的错误日志,而不是数据库日志。
2 日志过大说明你没有截断错误日志,错误日志是可以截断的,进入你的数据库输入DBCC ERRORLOG
每执行一次,当前的错误日志推出,让后建立新的错误日志,你只能删除 ERRORLOG1 --- 6的错误日志
没有号码的是正在使用的日志,删除会报错,如果它比较大,就DBCC ERRORLOG,而后他会变成
ERRORLOG+编号,你就可以删除了,另外建议你把这些ERRORLOG 放到其他盘符,比较好管理
-收缩日志
代码如下 | 复制代码 |
USE [master] |
其它方法
在查询分析器中顺序执行以下三步,其中 databasename 为你的数据库文件名
代码如下 | 复制代码 |
1.清空日志:DUMP TRANSACTION databasename WITH NO_LOG 2.截断事务日志:BACKUP LOG databasename WITH NO_LOG 3.收缩数据库:DBCC SHRINKDATABASE(databasename) |
--//////////////////////////////////////////////////////////////////
SQL Server日志清空方法
清空日志。
1.打开查询分析器,输入命令 DUMP TRANSACTION 数据库名 WITH NO_LOG
2.再打开企业管理器--右键你要压缩的数据库--所有任务--收缩数据库--收缩文件--选择日志文件--在收缩方式里选择收缩至XXM,这里会给出一个允许收缩到的最小M数,直接输入这个数,确定就可以了
一个删除错误日志程序
sql server日志为啥会增长很快,
有一个程序每5秒钟写数据一次,然后数据库日志经常增长很快,怎么避免这样的事情发生呢?
怎么能让sql server日志增长不要这么快,数据文件才100M日志文件居然1G多。
代码如下 | 复制代码 |
--清除日志: DECLARE @LogicalFileName sysname, @MaxMinutes INT, @NewSize INT USE szwzcheck -- 要操作的数据库名 SELECT @LogicalFileName = 'szwzcheck_Log', -- 日志文件名 @MaxMinutes = 10, -- Limit on time allowed to wrap log. @NewSize = 20 -- 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 AND @OriginalSize = (SELECT size FROM sysfiles WHERE name = @LogicalFileName) AND (@OriginalSize * 8 /1024) > @NewSize BEGIN -- Outer loop. SELECT @Counter = 0 WHILE ((@Counter 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 |
--把szwzcheck换成你数据库的名字即可,在查询分析器里面运行。
--收缩日志:企业管理器--所有任务--收缩数据库--文件--选日志文件收缩

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