Configure Database Mirroring

使用证书配置的镜像基本安装微软次序做就可以了

http://msdn.microsoft.com/zh-cn/library/ms191140.aspx

备份还原首先要转换成完全备份模式没什么好多说的

 USE master;

 GO

 ALTER DATABASE

 SET RECOVERY FULL;

 GO

直接备份数据库不能直接写C盘，目录自己建

 BACKUP DATABASE [AdventureWorks2012]

     TO DISK = 'C:\HOSTA\AdventureWorks2012.bak'

     WITH FORMAT

 GO

同样还原也需要指定，注意一定要使用WITH NORECOVERY

 USE [master]

 RESTORE DATABASE [AdventureWorks2012]

 FROM  DISK = N'C:\HOSTB\AdventureWorks2012.bak'

 WITH NORECOVERY,

 MOVE N'AdventureWorks2012_Data' TO N'C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2\MSSQL\DATA\AdventureWorks2012_Data.mdf',

 MOVE N'AdventureWorks2012_Log' TO N'C:\Program Files\Microsoft SQL Server\MSSQL11.SQL2\MSSQL\DATA\AdventureWorks2012_log.ldf'

 GO

证书创建和对倒部分其实就一步步做就可以了，注意端口号，路径用刚才的路径就成。密码偷懒也可以不改，原则上机器用的密码不要设置过期日期

HOSTA上

 USE master;

 CREATE MASTER KEY ENCRYPTION BY PASSWORD = '<1_Strong_Password!>';

 GO

 USE master;

 CREATE CERTIFICATE HOST_A_cert

    WITH SUBJECT = 'HOST_A certificate';

 GO

 CREATE ENDPOINT Endpoint_Mirroring

    STATE = STARTED

    AS TCP (

       LISTENER_PORT=7024

       , LISTENER_IP = ALL

    )

    FOR DATABASE_MIRRORING (

       AUTHENTICATION = CERTIFICATE HOST_A_cert

       , ENCRYPTION = REQUIRED ALGORITHM AES

       , ROLE = ALL

    );

 GO

 BACKUP CERTIFICATE HOST_A_cert TO FILE = 'C:\HOSTA\HOST_A_cert.cer';

 GO

HOSTB上

 USE master;

 CREATE MASTER KEY ENCRYPTION BY PASSWORD = '<Strong_Password_#2>';

 GO

 CREATE CERTIFICATE HOST_B_cert

    WITH SUBJECT = 'HOST_B certificate for database mirroring';

 GO

 CREATE ENDPOINT Endpoint_Mirroring

    STATE = STARTED

    AS TCP (

       LISTENER_PORT=7024

       , LISTENER_IP = ALL

    )

    FOR DATABASE_MIRRORING (

       AUTHENTICATION = CERTIFICATE HOST_B_cert

       , ENCRYPTION = REQUIRED ALGORITHM AES

       , ROLE = ALL

    );

 GO

 BACKUP CERTIFICATE HOST_B_cert TO FILE = 'C:\HOSTB\HOST_B_cert.cer';

 GO

HOSTA上的证书copy到HOSTB上，HOSTB上的证书copy到HOSTA上，随后创建用户导入证书

HOSTA

 USE master;

 CREATE LOGIN HOST_B_login WITH PASSWORD = '1Sample_Strong_Password!@#';

 GO

 CREATE USER HOST_B_user FOR LOGIN HOST_B_login;

 GO

 CREATE CERTIFICATE HOST_B_cert

    AUTHORIZATION HOST_B_user

    FROM FILE = 'C:\HOSTA\HOST_B_cert.cer'

 GO

 GRANT CONNECT ON ENDPOINT::Endpoint_Mirroring TO [HOST_B_login];

 GO

HOSTB

 USE master;

 CREATE LOGIN HOST_A_login WITH PASSWORD = '=Sample#2_Strong_Password2';

 GO

 CREATE USER

  FOR LOGIN HOST_A_login;

 GO

 CREATE CERTIFICATE HOST_A_cert

    AUTHORIZATION HOST_A_user

    FROM FILE = 'C:\HOSTB\HOST_A_cert.cer'

 GO

 GRANT CONNECT ON ENDPOINT::Endpoint_Mirroring TO [HOST_A_login];

 GO

在HOSTB上首先运行，可以使用IP地址或者主机名

 --At HOST_B, set server instance on HOST_A as partner (principal server):

 ALTER DATABASE [AdventureWorks2012]

     SET PARTNER = 'TCP://192.168.100.101:7024';

 GO

随后在HOSTA上运行

 --At HOST_A, set server instance on HOST_B as partner (mirror server).

 ALTER DATABASE [AdventureWorks2012]

     SET PARTNER = 'TCP://192.168.100.102:7024';

 GO

主库上应该显示为，主体已同步，备库上显示为正在恢复。

强制关闭HOSTA，在HOSTB使用以下语句进行切换，需要等待几秒。数据库显示为主体已断开连接

 USE master;

 alter database [AdventureWorks2012] set partner FORCE_SERVICE_ALLOW_DATA_LOSS;

http://msdn.microsoft.com/zh-cn/library/bb522476.aspx

此时恢复HOSTA，数据库状态为镜像，挂起/正在还原。。。在HOSTB中操作

 USE master;

 alter database [AdventureWorks2012] set partner resume;

这样HOSTB 就成为了主体，假如要将HOSTA在设置为主体，在HOSTB上的运行一下语句，切换为HOSTA为主题

 USE master;

 alter database [AdventureWorks2012] set partner resume;

Reference

http://msdn.microsoft.com/zh-cn/library/ms189852(v=sql.110).aspx

http://msdn.microsoft.com/zh-cn/library/ms189053.aspx

http://msdn.microsoft.com/zh-cn/library/ms189921.aspx

http://www.mssqltips.com/sqlservertip/2464/configure-sql-server-database-mirroring-using-ssms/