SQL Server数据库中，假如我们忘记了sa密码，又删除了builtinadministrators帐号，我们可以用下面的方法来修复。
1、首先停止所有与SQLServer相关的服务：
net stop "SQL Server Integration Services" net stop "SQL Server FullText Search (MSSQLSERVER)" net stop "SQL Server Agent (MSSQLSERVER)" net stop "SQL Server Analysis Services (MSSQLSERVER)" net stop "SQL Server Reporting Services (MSSQLSERVER)" net stop "SQL Server Browser" net stop "SQL Server (MSSQLSERVER)"
2、在命令行提示符下执行：
--SQL2005 cd C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLBinn sqlservr.exe -m
假如是命名实例执行sqlservr.exe -m -s<Instance Name>
3、启动另一个命令行窗口，执行 sqlcmd -E
4、在此窗口下执行下面的命令
create login [builtinadministrators] from windows go exec sp_addsrvrolemember [builtinadministrators], [sysadmin] go ALTER LOGIN sa WITH PASSWORD='***' go shutdown go
5、关闭2个命令行窗口，启动sqlserver，一切Ok
net start "SQL Server Integration Services" net start "SQL Server FullText Search (MSSQLSERVER)" net start "SQL Server Agent (MSSQLSERVER)" net start "SQL Server Analysis Services (MSSQLSERVER)" net start "SQL Server Reporting Services (MSSQLSERVER)" net start "SQL Server Browser" net start "SQL Server (MSSQLSERVER)"
本文就介绍到这里，假如您有更好、更简单的解决方法，欢迎您与我们分享，共同发展才是硬道理。