博客摘录「 Sql Server 收缩日志文件原理及always on 下的实践」2024年5月22日

四、Always on 环境下实践

先对数据库进行完整备份:

EXEC sp_configure 'show advanced options', 1;

RECONFIGURE;

EXEC sp_configure 'xp_cmdshell', 1;

RECONFIGURE;

DECLARE @DbName NVARCHAR(1000);

DECLARE myCursor CURSOR LOCAL STATIC

FOR

SELECT [name]

FROM sysdatabases

WHERE [name] NOT IN ( 'master', 'model', 'msdb', 'tempdb' )

AND name NOT LIKE '%test%'

AND name NOT LIKE '%bak%'

AND name NOT LIKE '%demo%'

AND version IS NOT NULL

AND version <> 0

ORDER BY [name];

OPEN myCursor;

FETCH NEXT FROM myCursor INTO @DbName;

WHILE ( @@FETCH_STATUS = 0 )

BEGIN

DECLARE @strDate AS NVARCHAR(20),

@strDateBeforeSeven AS NVARCHAR(20),

@strFileName AS NVARCHAR(255),

@strFileNameBeforeSeven AS NVARCHAR(255),

@strCommand AS NVARCHAR(255)

SET @strDate = CONVERT(NVARCHAR(20),GETDATE(),112);

SET @strDateBeforeSeven = CONVERT(NVARCHAR(20),GETDATE()-3,112);

SET @strFileName = 'E:\daybak\['+@DbName+']bakup'+@strDate;

SET @strFileNameBeforeSeven = 'E:\daybak\['+@DbName+']bakup'+@strDateBeforeSeven;

EXEC ('BACKUP DATABASE ['+@DbName+'] TO DISK = ''' + @strFileName + '.bak''')

SET @strCommand = 'DEL ' + @strFileNameBeforeSeven + '.bak'

EXEC master.dbo.xp_cmdshell @strCommand

FETCH NEXT FROM myCursor INTO @DbName;

END;

CLOSE myCursor;

DEALLOCATE myCursor;

然后对数据库进行事务日志备份并收缩:

EXEC sp_configure 'show advanced options', 1;

RECONFIGURE;

EXEC sp_configure 'xp_cmdshell', 1;

RECONFIGURE;

DECLARE @DbName NVARCHAR(1000);

DECLARE myCursor CURSOR LOCAL STATIC

FOR

SELECT [name]

FROM sysdatabases

WHERE [name] NOT IN ( 'master', 'model', 'msdb', 'tempdb' )

AND name NOT LIKE '%test%'

AND name NOT LIKE '%bak%'

AND name NOT LIKE '%demo%'

AND version IS NOT NULL

AND version <> 0

ORDER BY [name];

OPEN myCursor;

FETCH NEXT FROM myCursor INTO @DbName;

WHILE ( @@FETCH_STATUS = 0 )BEGIN

DECLARE @strDate AS NVARCHAR(20),

@strDateBeforeSeven AS NVARCHAR(20),

@strFileName AS NVARCHAR(255),

@strFileNameBeforeSeven AS NVARCHAR(255),

@strCommand AS NVARCHAR(255)

SET @strDate = CONVERT(NVARCHAR(20),GETDATE(),112);

SET @strDateBeforeSeven = CONVERT(NVARCHAR(20),GETDATE()-3,112);

SET @strFileName = 'E:\Log_daybak\['+@DbName+']bakup'+@strDate;

SET @strFileNameBeforeSeven='E:\Log_daybak\'+@DbName+']bakup'+@strDateBeforeSeven;

EXEC ('BACKUP LOG ['+@DbName+'] TO DISK = ''' + @strFileName + '.log'';USE ['+@DbName+'];DBCC SHRINKFILE(2,100);')

SET @strCommand = 'DEL ' + @strFileNameBeforeSeven + '.log'

EXEC master.dbo.xp_cmdshell @strCommand

FETCH NEXT FROM myCursor INTO @DbName;

END;

CLOSE myCursor;

DEALLOCATE myCursor;

相关推荐
想唱rap21 小时前
C++ string类的使用
开发语言·c++·笔记·算法·新浪微博
ajsbxi21 小时前
【Redis】缓存读/写操作流程
redis·笔记·spring·缓存·bootstrap
十安_数学好题速析1 天前
数论探秘:如何用模4思想破解平方数谜题
笔记·学习·高考
cmc10281 天前
127.XIlinx fpga端的pcie(XDMA)与驱动是如何交换数据的
笔记·fpga开发
optimistic_chen1 天前
【Java EE进阶 --- SpringBoot】Mybatis操作数据库(基础二)
xml·数据库·spring boot·笔记·java-ee·mybatis
摇滚侠1 天前
Spring Boot 3零基础教程,properties文件中配置和类的属性绑定,笔记14
java·spring boot·笔记
程序员大雄学编程1 天前
「机器学习笔记12」支持向量机(SVM)详解:从数学原理到Python实战
笔记·机器学习·支持向量机
YJlio1 天前
Process Monitor 学习笔记(5.7):长时间运行追踪与日志文件体积的控制
java·笔记·学习
JJJJ_iii1 天前
【机器学习03】学习率与特征工程、多项式回归、逻辑回归
人工智能·pytorch·笔记·学习·机器学习·回归·逻辑回归
_dindong1 天前
Linux网络编程:宏观网络体系
linux·网络·笔记·学习