USE MASTER

GO

SP_CONFIGURE 'ALLOW UPDATES',1 RECONFIGURE WITH OVERRIDE

GO

UPDATE SYSDATABASES SET STATUS =32768 WHERE NAME='置疑的数据库名'

Go

sp_dboption '置疑的数据库名', 'single user', 'true'

Go

DBCC CHECKDB('置疑的数据库名')

Go

update sysdatabases set status =28 where name='置疑的数据库名'

Go

sp_configure 'allow updates', 0 reconfigure with override

Go

sp_dboption '置疑的数据库名', 'single user', 'false' Go