--主机执行：
USE master; 
CREATE MASTER KEY ENCRYPTION BY PASSWORD = '123456'; 
CREATE CERTIFICATE HOST_A_cert WITH SUBJECT = 'HOST_A certificate' , 
START_DATE = '2012-08-02', 
EXPIRY_DATE = '2099-08-02'; 

--备机执行：

USE master; 
CREATE MASTER KEY ENCRYPTION BY PASSWORD = '123456'; 
CREATE CERTIFICATE HOST_B_cert WITH SUBJECT = 'HOST_B certificate', 
START_DATE = '2012-08-02', 
EXPIRY_DATE = '2099-08-02'; 

--主机执行： 

CREATE ENDPOINT Endpoint_Mirroring 

STATE = STARTED 

AS 

TCP ( LISTENER_PORT=5022 , LISTENER_IP = ALL ) 

FOR 

DATABASE_MIRRORING 

( AUTHENTICATION = CERTIFICATE HOST_A_cert , ENCRYPTION = REQUIRED ALGORITHM AES , ROLE = ALL ); 

 

--备机执行：

CREATE ENDPOINT Endpoint_Mirroring 

STATE = STARTED 

AS 

TCP ( LISTENER_PORT=5022 , LISTENER_IP = ALL ) 

FOR 

DATABASE_MIRRORING 

( AUTHENTICATION = CERTIFICATE HOST_B_cert , ENCRYPTION = REQUIRED ALGORITHM AES , ROLE = ALL );

--主机执行：

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


--备机执行：

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

--主机执行：
CREATE LOGIN HOST_B_login WITH PASSWORD = '123456'; 
CREATE USER HOST_B_user FOR LOGIN HOST_B_login; 
CREATE CERTIFICATE HOST_B_cert AUTHORIZATION HOST_B_user FROM FILE = 'C:\SQLBackup\HOST_B_cert.cer'; 
GRANT CONNECT ON ENDPOINT::Endpoint_Mirroring TO [HOST_B_login]; 
 
--备机执行：
CREATE LOGIN HOST_A_login WITH PASSWORD = '123456'; 
CREATE USER HOST_A_user FOR LOGIN HOST_A_login; 
CREATE CERTIFICATE HOST_A_cert AUTHORIZATION HOST_A_user FROM FILE = 'C:\SQLBackup\HOST_A_cert.cer'; 
GRANT CONNECT ON ENDPOINT::Endpoint_Mirroring TO [HOST_A_login]; 

--在备机中执行如下语句：

ALTER DATABASE shishan SET PARTNER = 'TCP://192.168.1.155:5022';

说明：shishan为数据库名，需要根据实际进行修改。192.168.1.155为主机IP地址，需根据实际进行修改。

--主机执行：

ALTER DATABASE shishan SET PARTNER = 'TCP://192.168.1.156:5022'; 

--切换主备 
use master;
alter database testdb set partner failover;
 
-- 备机强制切换
use master;
alter database testdb set partner force_service_allow_data_loss;
 
--恢复镜像
use master;
alter database testdb set partner resume;
 
 
--取消见证服务器
ALTER DATABASE testdb SET WITNESS OFF ;
 
--取消镜像
ALTER DATABASE testdb SET PARTNER OFF;
 
--设置镜像数据库还原为正常
RESTORE DATABASE testdb WITH RECOVERY;