USE MASTER
GO
SP_CONFIGURE 'ALLOW UPDATES',1 RECONFIGURE WITH OVERRIDE
GO
UPDATE SYSDATABASES SET STATUS =32768 WHERE NAME='local'
Go
sp_dboption 'local', 'single user', 'true'
Go
DBCC CHECKDB('local')
Go
update sysdatabases set status =28 where name='local'
Go
sp_configure 'allow updates', 0 reconfigure with override
Go
sp_dboption 'local', 'single user', 'false'
Go
dbcc rebuild_log('local','k:\local.ldf')
参考资料:www.sql120.com