恢复SQLSERVER的用户和口令

问题描述： 如何恢复SQLSERVER的用户和口令
产生原因：
解决方法： /*第一步,在原来的数据库服务器中先创建导出用户和口令的存储过程*/

USE master
GO
IF OBJECT_ID (‘sp_hexadecimal’) IS NOT NULL
DROP PROCEDURE sp_hexadecimal
GO
CREATE PROCEDURE sp_hexadecimal
@binvalue varbinary(256),
@hexvalue varchar(256) OUTPUT
AS
DECLARE @charvalue varchar(256)
DECLARE @i int
DECLARE @length int
DECLARE @hexstring char(16)
SELECT @charvalue = ’0x’
SELECT @i = 1
SELECT @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 + 1
END
SELECT @hexvalue = @charvalue
GO

IF OBJECT_ID ('sp_help_revlogin') IS NOT NULL
DROP PROCEDURE sp_help_revlogin
GO
CREATE PROCEDURE sp_help_revlogin @login_name sysname = NULL AS
DECLARE @name sysname
DECLARE @xstatus int
DECLARE @binpwd varbinary (256)
DECLARE @txtpwd sysname
DECLARE @tmpstr varchar (256)
DECLARE @SID_varbinary varbinary(85)
DECLARE @SID_string varchar(256)

IF (@login_name IS NULL)
DECLARE login_curs CURSOR FOR
SELECT sid, name, xstatus, password FROM master..sysxlogins
WHERE srvid IS NULL AND name <> ‘sa’
ELSE
DECLARE login_curs CURSOR FOR
SELECT sid, name, xstatus, password FROM master..sysxlogins
WHERE srvid IS NULL AND name like @login_name+’%’
OPEN login_curs
FETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @xstatus, @binpwd
IF (@@fetch_status = -1)
BEGIN
PRINT ‘No login(s) found.’
CLOSE login_curs
DEALLOCATE login_curs
RETURN -1
END
SET @tmpstr = ‘/* sp_help_revlogin script’
PRINT @tmpstr
SET @tmpstr = ‘** Generated ‘
+ CONVERT (varchar, GETDATE()) + ‘on ‘+ @@SERVERNAME + ‘*/’
PRINT @tmpstr
PRINT ”
PRINT ‘DECLARE @pwd sysname’
WHILE (@@fetch_status <> -1)
BEGIN
IF (@@fetch_status <> -2)
BEGIN
PRINT ”
SET @tmpstr = ‘– Login: ‘+ @name
PRINT @tmpstr
IF (@xstatus & 4) = 4
BEGIN
IF (@xstatus & 1) = 1
BEGIN
SET @tmpstr = ‘EXEC master..sp_denylogin ”’ + @name + ””
PRINT @tmpstr
END
ELSE BEGIN
SET @tmpstr = ‘EXEC master..sp_grantlogin ”’ + @name + ””
PRINT @tmpstr
END
END
ELSE BEGIN
IF (@binpwd IS NOT NULL)
BEGIN
EXEC sp_hexadecimal @binpwd, @txtpwd OUT
IF (@xstatus & 2048) = 2048
SET @tmpstr = ‘SET @pwd = CONVERT (varchar(256), ‘+ @txtpwd + ‘)’
ELSE
SET @tmpstr = ‘SET @pwd = CONVERT (varbinary(256), ‘+ @txtpwd + ‘)’
PRINT @tmpstr
EXEC sp_hexadecimal @SID_varbinary,@SID_string OUT
SET @tmpstr = ‘EXEC master..sp_addlogin ”’ + @name
+ ”’, @pwd, @sid = ‘+ @SID_string + ‘, @encryptopt = ‘
END
ELSE BEGIN
EXEC sp_hexadecimal @SID_varbinary,@SID_string OUT
SET @tmpstr = ‘EXEC master..sp_addlogin”’ + @name
+ ”’, NULL, @sid = ‘+ @SID_string + ‘, @encryptopt = ‘
END
IF (@xstatus & 2048) = 2048

SET @tmpstr = @tmpstr + ”’skip_encryption_old”’
ELSE
SET @tmpstr = @tmpstr + ”’skip_encryption”’
PRINT @tmpstr
END
END
FETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @xstatus, @binpwd
END
CLOSE login_curs
DEALLOCATE login_curs
RETURN 0
GO

/*第二步,在原数据库执行创建的存储过程,恢复某个数据库的,要加上参数,参数为cw+帐套编号*/
EXEC sp_help_revlogin ‘cw加上帐套编号’（例如第三套帐就是cw003）

/*然后会输出一堆脚本，仅示例，请勿用这个，而是要用你上面存储过程输出的*/
/* sp_help_revlogin script
** Generated 01 25 2006 10:24AMon LHGSVR*/

/*DECLARE @pwd sysname

– Login: BUILTIN\Administrators
EXEC master..sp_grantlogin ‘BUILTIN\Administrators’

– Login: IUSR_admin
SET @pwd = CONVERT (varbinary(256), 0x01005E4EC65CB57A46BAE484840121C13071245AD251964132723C0F43EA0512C60EB6D0442EF0B1C58C1D684ED0)
EXEC master..sp_addlogin ‘IUSR_admin’, @pwd, @sid = 0xCAE98EC396D2BA4897A14DAA3E59853F, @encryptopt = ‘skip_encryption’

– Login: cw0030001
SET @pwd = CONVERT (varbinary(256), 0x01005110A22C29C5B22199AB99469BB3E07E4A7909BC0CB1D82BD02F1937C41BC3E43FC0F8AB6A468683EDB81706)
EXEC master..sp_addlogin ‘cw0030001′, @pwd, @sid = 0xEEF47E9B0FFE7F4394A1DBFB9E277D66, @encryptopt = ‘skip_encryption’
……
*/

/*第三步,把输出的脚本贴到目标数据库服务器中执行，就可以了,需要注意的是如果目标数据库和原数据库的帐套编号不一致的话，需要手工调整脚本，例如原数据库是cwbase3,恢复到cwbase4需要把cw003,修改成cw004.执行完sql 后还需要在企业管理器中安全性-登陆中选中刚才的恢复用户右键属性-数据库访问，选择相应的数据库及cwmaster即可*/

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