原文:SQL Server系统数据库备份最佳实践

首先了解主要的系统数据库：

除了以上四种，其实还有一个数据库：Resource

从2005就引入的，一个只读、隐藏的数据库，包含所有在sql server中的系统对象。由于SQL SERVER不支持备份还原Resource数据库。所以DBA需要复制Resource的mssqlsystemresource.mdf和mssqlsystemresource.ldf文件。

SQL Server 2005 中的Resource数据库在路径： “<drive>:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\” location

SQL Server 2008 中的Resource数据库在路径： “<drive>:\Program Files\Microsoft SQL Server\MSSQL10.<instance_name>\MSSQL\Binn\” location.

报表服务数据库：如果装了报表服务，将会看到这两个服务数据库

ReportServer

ReportServerTempDB

Replication System Database（复制服务系统数据库）

distribution - 当配置了复制服务时，将会看到这个数据库。

如果需要执行基于文件的备份功能来备份Resource数据库，则需要开启XP_CmdShell

USE master
GO
sp_configure ‘show advanced options‘
GO
/* 0 = Disabled , 1 = Enabled */
sp_configure ‘xp_cmdshell‘, 1
GO
RECONFIGURE WITH OVERRIDE
GO

使用下面语句可以把系统数据库备份到E盘的 SystemDatabaseBackups  文件夹中：

USE master
GO
SELECT GETDATE() AS ‘System Database Backup Start Time‘
GO
/* Backup Distribution Database */
BACKUP DATABASE Distribution
TO DISK = ‘E:\SystemDatabaseBackups\Distribution.BAK‘
WITH INIT
GO
/* Backup ReportServer Database */
BACKUP DATABASE ReportServer
TO DISK = ‘E:\SystemDatabaseBackups\ReportServer.BAK‘
WITH INIT
GO
/* Backup ReportServerTempDB Database */
BACKUP DATABASE ReportServerTempDB
TO DISK = ‘E:\SystemDatabaseBackups\ReportServerTempDB.BAK‘
WITH INIT
GO
/* Backup Master Model */
BACKUP DATABASE Model
TO DISK = ‘E:\SystemDatabaseBackups\Model.BAK‘
WITH INIT
GO
/* Backup Master Database */
BACKUP DATABASE Master
TO DISK = ‘E:\SystemDatabaseBackups\Master.BAK‘
WITH INIT
GO
/* Backup Master MSDB */
BACKUP DATABASE MSDB
TO DISK = ‘E:\SystemDatabaseBackups\MSDB.BAK‘
WITH INIT
GO
/* Copy Resource Database Files Using XP_CMDSHELL */
EXEC xp_cmdshell ‘COPY /Y "D:\Program Files\Microsoft SQL Server\MSSQL10.
SQL2008\MSSQL\Binn\mssqlsystemresource.mdf" "E:\SystemDatabaseBackups"‘
GO
EXEC xp_cmdshell ‘COPY /Y "D:\Program Files\Microsoft SQL Server\MSSQL10.
SQL2008\MSSQL\Binn\mssqlsystemresource.ldf" "E:\SystemDatabaseBackups"‘
GO
SELECT GETDATE() AS ‘System Database Backup End Time‘
GO