我试过了

ALTER DATABASE DB SET MULTI_USER

但得到

Msg 5064,Level 16,State 1,Line 1
Changes to the state or options of
database ‘DB’ cannot be made at this
time. The database is in single-user
mode,and a user is currently
connected to it. Msg 5069,
State 1,Line 1 ALTER DATABASE
statement Failed.

当我右键单击数据库以转到我获得的属性时

数据库“DB”已经打开,一次只能有一个用户.

有任何想法吗 ？