无法获得数据库'model'上的排他锁

SELECT s.spid FROM sys.sysprocesses s WHERE s.dbid&＃61;DB_ID(&＃39;model&＃39;)

ALTER DATABASE model SET OFFLINE WITH ROLLBACK IMMEDIATE;
ALTER DATABASE model SET ONLINE WITH NO_WAIT;

任何连接都被干掉&＃xff01;&＃xff01;