数据库迁移必备--迁移登录账户

背景

DBA 经常会遇到的一个场景就是数据库的迁移，把数据库从A服务器迁移到B服务器。在数据库完成迁移后，我们还需要把相关的其他一些服务器级别的对象迁移过去，比如作业，登录账户，链接服务器等。今天主要分享导出登录账户的脚本

正文

---SQL 2005以上版本适用--找到了解决办法.--1.在A服务器上执行USE masterGOIF OBJECT_ID ('sp_hexadecimal') IS NOT NULL  DROP PROCEDURE sp_hexadecimalGOCREATE PROCEDURE sp_hexadecimal    @binvalue varbinary(256),    @hexvalue varchar (514) OUTPUTASDECLARE @charvalue varchar (514)DECLARE @i intDECLARE @length intDECLARE @hexstring char(16)SELECT @charvalue = '0x'SELECT @i = 1SELECT @length = DATALENGTH (@binvalue)SELECT @hexstring = '0123456789ABCDEF'WHILE (@i <= @length)BEGIN  DECLARE @tempint int  DECLARE @firstint int  DECLARE @secondint int  SELECT @tempint = CONVERT(int, SUBSTRING(@binvalue,@i,1))  SELECT @firstint = FLOOR(@tempint/16)  SELECT @secondint = @tempint - (@firstint*16)  SELECT @charvalue = @charvalue +    SUBSTRING(@hexstring, @firstint+1, 1) +    SUBSTRING(@hexstring, @secondint+1, 1)  SELECT @i = @i + 1ENDSELECT @hexvalue = @charvalueGOIF OBJECT_ID ('sp_help_revlogin') IS NOT NULL  DROP PROCEDURE sp_help_revloginGOCREATE PROCEDURE sp_help_revlogin @login_name sysname = NULL ASDECLARE @name sysnameDECLARE @type varchar (1)DECLARE @hasaccess intDECLARE @denylogin intDECLARE @is_disabled intDECLARE @PWD_varbinary  varbinary (256)DECLARE @PWD_string  varchar (514)DECLARE @SID_varbinary varbinary (85)DECLARE @SID_string varchar (514)DECLARE @tmpstr  varchar (1024)DECLARE @is_policy_checked varchar (3)DECLARE @is_expiration_checked varchar (3)DECLARE @defaultdb sysnameIF (@login_name IS NULL)  DECLARE login_curs CURSOR FOR      SELECT p.sid, p.name, p.type, p.is_disabled, p.default_database_name, l.hasaccess, l.denylogin FROM sys.server_principals p LEFT JOIN sys.syslogins l      ON ( l.name = p.name ) WHERE p.type IN ( 'S', 'G', 'U' ) AND p.name <> 'sa'ELSE  DECLARE login_curs CURSOR FOR      SELECT p.sid, p.name, p.type, p.is_disabled, p.default_database_name, l.hasaccess, l.denylogin FROM sys.server_principals p LEFT JOIN sys.syslogins l      ON ( l.name = p.name ) WHERE p.type IN ( 'S', 'G', 'U' ) AND p.name = @login_nameOPEN login_cursFETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @type, @is_disabled, @defaultdb, @hasaccess, @denyloginIF (@@fetch_status = -1)BEGIN  PRINT 'No login(s) found.'  CLOSE login_curs  DEALLOCATE login_curs  RETURN -1ENDSET @tmpstr = '/* sp_help_revlogin script 'PRINT @tmpstrSET @tmpstr = '** Generated ' + CONVERT (varchar, GETDATE()) + ' on ' + @@SERVERNAME + ' */'PRINT @tmpstrPRINT ''WHILE (@@fetch_status <> -1)BEGIN  IF (@@fetch_status <> -2)  BEGIN    PRINT ''    SET @tmpstr = '-- Login: ' + @name    PRINT @tmpstr    IF (@type IN ( 'G', 'U'))    BEGIN -- NT authenticated account/group      SET @tmpstr = 'CREATE LOGIN ' + QUOTENAME( @name ) + ' FROM WINDOWS WITH DEFAULT_DATABASE = [' + @defaultdb + ']'    END    ELSE BEGIN -- SQL Server authentication        -- obtain password and sid            SET @PWD_varbinary = CAST( LOGINPROPERTY( @name, 'PasswordHash' ) AS varbinary (256) )        EXEC sp_hexadecimal @PWD_varbinary, @PWD_string OUT        EXEC sp_hexadecimal @SID_varbinary,@SID_string OUT        -- obtain password policy state        SELECT @is_policy_checked = CASE is_policy_checked WHEN 1 THEN 'ON' WHEN 0 THEN 'OFF' ELSE NULL END FROM sys.sql_logins WHERE name = @name        SELECT @is_expiration_checked = CASE is_expiration_checked WHEN 1 THEN 'ON' WHEN 0 THEN 'OFF' ELSE NULL END FROM sys.sql_logins WHERE name = @name            SET @tmpstr = 'CREATE LOGIN ' + QUOTENAME( @name ) + ' WITH PASSWORD = ' + @PWD_string + ' HASHED, SID = ' + @SID_string + ', DEFAULT_DATABASE = [' + @defaultdb + ']'        IF ( @is_policy_checked IS NOT NULL )        BEGIN          SET @tmpstr = @tmpstr + ', CHECK_POLICY = ' + @is_policy_checked        END        IF ( @is_expiration_checked IS NOT NULL )        BEGIN          SET @tmpstr = @tmpstr + ', CHECK_EXPIRATION = ' + @is_expiration_checked        END    END    IF (@denylogin = 1)    BEGIN -- login is denied access      SET @tmpstr = @tmpstr + '; DENY CONNECT SQL TO ' + QUOTENAME( @name )    END    ELSE IF (@hasaccess = 0)    BEGIN -- login exists but does not have access      SET @tmpstr = @tmpstr + '; REVOKE CONNECT SQL TO ' + QUOTENAME( @name )    END    IF (@is_disabled = 1)    BEGIN -- login is disabled      SET @tmpstr = @tmpstr + '; ALTER LOGIN ' + QUOTENAME( @name ) + ' DISABLE'    END    PRINT @tmpstr  END  FETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @type, @is_disabled, @defaultdb, @hasaccess, @denylogin   ENDCLOSE login_cursDEALLOCATE login_cursRETURN 0GO

--生成创建登录账号脚本

exec master..sp_help_revlogin

把脚本COPY到新的服务器上执行

总结

使用这个办法有2个好处。1。可以批量同步所有需要的登录账号 

2.由于产生的SID是相同的，不会有孤立账号的问题。在ALWAY ON环境下，我们就需要采用这种方式。不然没有ALWAYS ON 切换后都需要手动处理 孤立账号的问题