我不能把它带到网上！

我试过了

USE master;
GO

ALTER DATABASE [DBNAME] SET ONLINE

我收到一个错误.

User does not have permission to alter database ‘DBNAME’,the database
does not exist,or the database is not in a state that allows access
checks.

我也尝试使用任务带来在线,我得到完全相同的错误.

任何人都可以尽快帮助我吗？