SQL 数据库备份和恢复 镜像配置（证书方式）

步骤一：备份和恢复数据库
-- 以完整和事务日志备份主数据库
-- 从服务器上先后还原完整备份和事务日志备份，注意选择不对数据库执行任何操作（WITH NORECOVERY）

步骤二：主服务器A配置证书
-- 创建主密钥
CREATE master KEY ENCRYPTION BY password = ‘PASSWORDA‘ ;
GO
-- 创建证书
CREATE CERTIFICATE Cert_A WITH subject = ‘A证书‘ ;
GO
-- 创建端点
IF EXISTS( SELECT 1 FROM sys. endpoints WHERE name= ‘主镜像‘ )
  DROP endpoint [主镜像]
GO
CREATE endpoint [主镜像]
  AUTHORIZATION [sa]
  STATE= started
  AS TCP (listener_port = 5022 , listener_IP = ALL)
  FOR data_mirroring (ROLE = partner, authentication = CERTIFICATE Cert_A, ENCRYPTION=required algorithm RC4)
GO
-- 导出证书
BACKUP CERTIFICATE Cert_A TO FILE = ‘H:\MyCert\Cert_A.cer‘

步骤三：从服务器B配置证书
-- 创建主密钥
CREATE master KEY ENCRYPTION BY password = ‘PASSWORDB‘ ;
GO
-- 创建证书
CREATE CERTIFICATE Cert_B WITH subject = ‘B证书‘ ;
GO
-- 创建端点
IF EXISTS( SELECT 1 FROM sys. endpoints WHERE name= ‘从镜像‘ )
  DROP endpoint [从镜像]
GO
CREATE endpoint [从镜像]
  AUTHORIZATION [sa]
  STATE= started
  AS TCP (listener_port = 5022 , listener_IP = ALL)
  FOR data_mirroring (ROLE = partner, authentication = CERTIFICATE Cert_B, ENCRYPTION=required algorithm RC4)
GO
-- 导出证书
BACKUP CERTIFICATE Cert_CY08 TO FILE = ‘C:\Cert_B.cer‘

步骤四：交换证书

步骤五：主服务器A创建登陆用户
USE master ;
-- 创建登录名
CREATE LOGIN B_login WITH PASSWORD = ‘PASSWORDA‘;
GO
-- 创建用户
CREATE USER CY08_user FOR LOGIN B_login;
GO
-- 还原B 证书
CREATE CERTIFICATE Cert_B
  AUTHORIZATION B_user
  FROM FILE = ‘H:\MyCert\Cert_B.cer‘
GO
-- 授权端点给登陆名
GRANT CONNECT ON ENDPOINT::[ 主镜像] TO [B_login] ;

步骤六：从服务器A创建登陆用户
USE master ;
-- 创建登录名
CREATE LOGIN A_login WITH PASSWORD = ‘PASSWORDA‘;
GO
-- 创建用户
CREATE USER A_user FOR LOGIN A_login;
GO
-- 还原B证书
CREATE CERTIFICATE Cert_A
  AUTHORIZATION A_user
  FROM FILE = ‘C:\Cert_A.cer‘
GO
-- 授权端点给登陆名
GRANT CONNECT ON ENDPOINT::[从镜像] TO [A_login] ;

步骤七：开始镜像
-- 从数据库执行，连接镜像
USE master
GO  
ALTER DATABASE CYEMS SET PARTNER = ‘TCP://192.168.0.A:5022‘;  
GO

-- 主数据库执行
USE master
GO
ALTER DATABASE CYEMS SET PARTNER = ‘TCP://192.168.0.B:5022‘;
GO

相关脚本
-- 停止镜像，之后可重新连接；配置过程中发生问题可用
ALTER DATABASE CYEMS SET PARTNER OFF;
-- 高安全模式，OFF为异步模式
ALTER DATABASE CYEMS SET SAFETY FULL;
--切换主备；可用于数据库升级维护
ALTER DATABASE [DBName] SET PARTNER FAILOVER;
--当主库故障无法连接时，强制将镜像库设置为主库，允许数据丢失
ALTERDATABASE[DBName]SETPARTNERFORCE_SERVICE_ALLOW_DATA_LOSS;
--恢复镜像
ALTER DATABASE [DBName] SET PARTNER RESUME;
--设置数据库联机
ALTER DATABASE [DBName] SET ONLINE;

-- 在主备执行：创建数据库镜像监视器作业
use msdb ;  
exec sys .sp_dbmmonitoraddmonitoring  
--exec sys.sp_dbmmonitorhelpmonitoring  
--exec sys.sp_dbmmonitorresults DBName,0,0  
--exec sys.sp_dbmmonitorchangemonitoring  
--exec sys.sp_dbmmonitordropmonitoring