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MSSQL 2008删除或压缩数据库日志方法总结

Jun 07, 2016 pm 05:49 PM
Database log

本文章给大家介绍MSSQL 2008删除或压缩数据库日志的一些常用方法总结,包括有数据库日志压缩与删除的几种不同的操作方法,有需要了解的朋友可参考。

方法一,我自己常用的方法

 代码如下 复制代码
1.清空日志  
  DUMP  TRANSACTION  库名 WITH  NO_LOG          
   
2.截断事务日志:  
  BACKUP  LOG  库名 WITH  NO_LOG  

   
3.收缩文件(如果不压缩,的文件不会减小  
  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  
  --选择数据文件--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  
   
也可以用SQL语句来完成  

 代码如下 复制代码

  --收缩数据库  
  DBCC  SHRINKDATABASE(库名)  
   
--收缩指定数据文件,1是文件号,可以通过这个语句查询到:  *  from  sysfiles  

  DBCC  SHRINKFILE(1)  


方法二,利用代码方式

 代码如下 复制代码

USE [master]
GO
ALTER DATABASE DNName SET RECOVERY SIMPLE WITH NO_WAIT
GO
ALTER DATABASE DNName SET RECOVERY SIMPLE   --简单模式
GO
USE DNName
GO
DBCC SHRINKFILE (N'DNName_Log' , 11, TRUNCATEONLY)
GO
USE [master]
GO
ALTER DATABASE DNName SET RECOVERY FULL WITH NO_WAIT
GO
ALTER DATABASE DNName SET RECOVERY FULL  --还原为完全模式
GO

方法二,直接使用mssql企业管理器

1、设置数据库模式为简单模式:打开SQL企业管理器,在控制台根目录中依次点开Microsoft SQL Server-->SQL Server组-->双击打开你的服务器-->双击打开数据库目录-->选择你的数据库名称(如论坛数据库Forum)-->然后点击右键选择属性-->选择选项-->在故障还原的模式中选择"简单",然后按确定保存

2、在当前数据库上点右键,看所有任务中的收缩数据库,一般里面的默认设置不用调整,直接点确定

3、收缩数据库完成后,建议将您的数据库属性重新设置为标准模式,操作方法同第一点,因为日志在一些异常情况下往往是恢复数据库的重要依据

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