ALTER DATABASE Test_DB modify name = Howie - change the database name
EXEC sp_renamedb 'Howie', 'Howie_Wee' - change the database name
When these changes above, the need to ensure that no one else connect to a database or application, otherwise it will error (exclusive lock can not be used to lock the database to perform the operation (Microsoft SQL Server, Error: 5030))
You can use the following statement to view:
select spid
from master.dbo.sysprocesses
where dbid=db_id('Test_DB')
I see here are 142 and 145, and then kill them off
kill 142
kill 145