我总是用:

ALTER DATABASE DB_NAME SET SINGLE_USER WITH ROLLBACK IMMEDIATE 
GO 
SP_RENAMEDB 'DB_NAME','DB_NAME_NEW'
Go 
ALTER DATABASE DB_NAME_NEW  SET MULTI_USER -- set back to multi user 
GO 

您可以使用SP_Who命令杀死所有使用您的数据库的进程，然后重命名您的数据库。

下面是如何在MS SQL Server Management Studio 2008(可能也适用于其他版本)中可靠地执行这类事情:

In the Object Explorer Tree, right click the root database server (with the green arrow), then click activity monitor. Open the processes tab in the activity monitor, select the 'databases' drop down menu, and filter by the database you want. Right click the DB in Object Explorer and start a 'Tasks -> Take Offline' task. Leave this running in the background while you... Safely shut down whatever you can. Kill all remaining processes from the process tab. Bring the DB back online. Rename the DB. Bring your service back online and point it to the new DB.

杀他，用火杀他。

USE master
go

DECLARE @dbname sysname
SET @dbname = 'yourdbname'

DECLARE @spid int
SELECT @spid = min(spid) from master.dbo.sysprocesses where dbid = db_id(@dbname)
WHILE @spid IS NOT NULL
BEGIN
EXECUTE ('KILL ' + @spid)
SELECT @spid = min(spid) from master.dbo.sysprocesses where dbid = db_id(@dbname) AND spid > @spid
END

Select 'Kill '+ CAST(p.spid AS VARCHAR)KillCommand into #temp
from master.dbo.sysprocesses p (nolock)
join master..sysdatabases d (nolock) on p.dbid = d.dbid
Where d.[name] = 'your db name'

Declare @query nvarchar(max)
--Select * from #temp
Select @query =STUFF((                              
            select '  ' + KillCommand from #temp
            FOR XML PATH('')),1,1,'') 
Execute sp_executesql @query 
Drop table #temp

使用'master'数据库并运行此查询，它将杀死数据库中的所有活动连接。

ALTER DATABASE [Test]
SET OFFLINE WITH ROLLBACK IMMEDIATE

ALTER DATABASE [Test]
SET ONLINE