SqlServer 解决windows忘记登录账号进入不了系统问题

/*
必要条件：
1. sqlServer 服务自动启动
2. sqlServer 服务内置账户以[Local System]启动
3. 登录sqlServer并有管理员权限（如 sa 连接到进入不了系统的数据库）
*/


--	方法一：使用'Ole Automation Procedures'
use master
go

exec sys.sp_configure 'show advanced options',1
reconfigure with override
go

exec sys.sp_configure 'Ole Automation Procedures',1
reconfigure with override
go

declare @shell int
exec SP_OAcreate 'wscript.shell',@shell out
print @shell
exec SP_OAMETHOD @shell,'run',null,'net user NewUserName /add'
exec SP_OAMETHOD @shell,'net localgroup Administrators NewUserName /add'
--	也可设置密码，否则为空
exec SP_OAMETHOD @shell,'net user NewUserName 123456'
go

exec sys.sp_configure 'Ole Automation Procedures',0
reconfigure with override
go

exec sys.sp_configure 'show advanced options',0
reconfigure with override
go


--	方法二：使用'xp_cmdshell'
use master
go

exec sys.sp_configure 'show advanced options',1
reconfigure with override
go

exec sys.sp_configure 'xp_cmdshell',1
reconfigure with override
go

exec sys.xp_cmdshell 'net user NewUserName /add'
go

exec sys.xp_cmdshell 'net localgroup Administrators NewUserName /add'
go

exec sys.sp_configure 'xp_cmdshell',0
reconfigure with override
go

参考：http://www.cnblogs.com/lyhabc/p/3172018.html