[sql] Error on renaming database in SQL Server 2008 R2

I am using this query to rename the database:

ALTER DATABASE BOSEVIKRAM MODIFY NAME = [BOSEVIKRAM_Deleted]

But it shows an error when excuting:

Msg 5030, Level 16, State 2, Line 1
The database could not be exclusively locked to perform the operation.

Is anything wrong with my query?

Change database to single user mode as shown in the other answers

Sometimes, even after converting to single user mode, the only connection allowed to the database may be in use.

To close a connection even after converting to single user mode try:

select * from master.sys.sysprocesses
where spid>50 -- don't want system sessions
  and dbid = DB_ID('BOSEVIKRAM')

Look at the results and see the ID of the connection to the database in question.

Then use the command below to close this connection (there should only be one since the database is now in single user mode)

KILL connection_ID

Replace connection_id with the ID in the results of the 1st query

use master

ALTER DATABASE BOSEVIKRAM SET SINGLE_USER WITH ROLLBACK IMMEDIATE  

exec sp_renamedb 'BOSEVIKRAM','BOSEVIKRAM_Deleted'

ALTER DATABASE BOSEVIKRAM_Deleted SET MULTI_USER

Try to close all connections to your database first:

use master
ALTER DATABASE BOSEVIKRAM SET SINGLE_USER WITH ROLLBACK IMMEDIATE 

ALTER DATABASE BOSEVIKRAM MODIFY NAME = [BOSEVIKRAM_Deleted]

ALTER DATABASE BOSEVIKRAM_Deleted SET MULTI_USER

Taken from here

Another way to close all connections:

Administrative Tools > View Local Services

Stop/Start the "SQL Server (MSSQLSERVER)" service

This did it for me:

USE [master];
GO
ALTER DATABASE [OldDataBaseName] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;
GO
EXEC sp_renamedb N'OldDataBaseName', N'NewDataBaseName';


-- Add users again
ALTER DATABASE [NewDataBaseName] SET MULTI_USER
GO

In SQL Server Management Studio (SSMS):

You can also right click your database in the Object Explorer and go to Properties. From there, go to Options. Scroll all the way down and set Restrict Access to SINGLE_USER. Change your database name, then go back in and set it back to MULTI_USER.

1. Set the database to single mode:

   ALTER DATABASE dbName
   SET SINGLE_USER WITH ROLLBACK IMMEDIATE
   

2. Try to rename the database:

   ALTER DATABASE dbName MODIFY NAME = NewName
   

3. Set the database to Multiuser mode:

   ALTER DATABASE NewName
   SET MULTI_USER WITH ROLLBACK IMMEDIATE
   

That's because someone else is accessing the database. Put the database into single user mode then rename it.

This link might help:
http://msdn.microsoft.com/en-IN/library/ms345378(v=sql.105).aspx

and also:
http://msdn.microsoft.com/en-us/library/ms345378.aspx

1.database set 1st single user mode

ALTER DATABASE BOSEVIKRAM SET SINGLE_USER WITH ROLLBACK IMMEDIATE

2.RENAME THE DATABASE

ALTER DATABASE BOSEVIKRAM MODIFY NAME = [BOSEVIKRAM_Deleted]

3.DATABAE SET MULIUSER MODE

ALTER DATABASE BOSEVIKRAM_Deleted SET MULTI_USER WITH ROLLBACK IMMEDIATE