以下是数据库名称是Tonsoft 为例，打开查询分析器，吧以下语句在查询分析器执行就可以
USE MASTER
GO
SP_CONFIGURE 'ALLOW UPDATES',1 RECONFIGURE WITH OVERRIDE
GO
UPDATE SYSDATABASES SET STATUS =32768 WHERE NAME='Tonsoft'
Go
sp_dboption 'Tonsoft', 'single user', 'true'
Go
update sysdatabases set status =28 where name='Tonsoft'
Go
sp_configure 'allow updates', 0 reconfigure with override
Go
sp_dboption 'Tonsoft', 'single user', 'false'
Go
DBCC CHECKDB('Tonsoft')
GO
Alter database Tonsoft set single_user
exec sp_dboption 'Tonsoft','dbo use only','false'
