/*
该脚本示例如何完整的修改一个数据库的名称.
数据库为原名称为DB_BEIJING，需要修改成DB_SHANGHAI
nzperfect 2012.12.19
*/

--判断是否存在同名的数据库，以防止误删除
USE master
GO
IF EXISTS (SELECT name FROM sys.databases WHERE name = N‘DB_BEIJING‘)
BEGIN
    RAISERROR(‘请注意：数据库已存在！‘,15,1)
    RETURN
    --DROP DATABASE DB_BEIJING
END
GO


USE master
GO
--创建测试数库
CREATE DATABASE [DB_BEIJING] 
ON PRIMARY 
( 
    NAME = N‘DB_BEIJING‘, 
    FILENAME = N‘X:\DATA\DB_BEIJING.mdf‘ , 
    SIZE = 3072KB , 
    FILEGROWTH = 1024KB 
)
LOG ON 
( 
    NAME = N‘DB_BEIJING_log‘, 
    FILENAME = N‘W:\Log\DB_BEIJING_log.ldf‘ , 
    SIZE = 1024KB , 
    FILEGROWTH = 1024KB 
)
GO

--以下为修改过程

--step 1 : 修改数据库名称
USE master
GO
ALTER DATABASE DB_BEIJING SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
EXEC master..sp_renamedb ‘DB_BEIJING‘,‘DB_SHANGHAI‘
GO
ALTER DATABASE DB_SHANGHAI SET MULTI_USER 
GO

--step 2 : 查看修改名称后的数据库逻辑名及物理文件名
USE master
GO
SELECT name AS [Logical Name], physical_name AS [DB File Path],type_desc AS [File Type],
state_desc AS [State] FROM sys.master_files
WHERE database_id = DB_ID(N‘DB_SHANGHAI‘)
GO
/*
Logical Name    DB File Path                File Type    State
DB_BEIJING        X:\DATA\DB_BEIJING.mdf        ROWS        ONLINE
DB_BEIJING_log    W:\Log\DB_BEIJING_log.ldf    LOG            ONLINE
*/

--step 3 : 修改数据库逻辑文件名称
USE master
GO
ALTER DATABASE DB_SHANGHAI SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME=N‘DB_BEIJING‘, NEWNAME=N‘DB_SHANGHAI‘)
GO
ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME=N‘DB_BEIJING_log‘, NEWNAME=N‘DB_SHANGHAI_log‘)
GO
ALTER DATABASE DB_SHANGHAI SET MULTI_USER 
GO

--step 4 : 修改数据库物理文件名称之前先打开xp_cmdshell支持
USE master
GO
sp_configure ‘show advanced options‘,1
GO
RECONFIGURE WITH OVERRIDE
GO
sp_configure ‘xp_cmdshell‘, 1
GO
RECONFIGURE WITH OVERRIDE
GO

--step 5 : 重命名数据库物理文件名称
USE [master]
GO
ALTER DATABASE DB_SHANGHAI SET OFFLINE WITH ROLLBACK IMMEDIATE
GO
EXEC xp_cmdshell ‘RENAME "X:\DATA\DB_BEIJING.mdf", "DB_SHANGHAI.mdf"‘
GO
EXEC xp_cmdshell ‘RENAME "W:\Log\DB_BEIJING_log.ldf", "DB_SHANGHAI_log.ldf"‘
GO

--step 6 : 将数据库逻辑名称指向新的物理文件，并将数据库online
USE [master]
GO
ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME =DB_SHANGHAI, FILENAME = ‘X:\DATA\DB_SHANGHAI.mdf‘)
GO
ALTER DATABASE DB_SHANGHAI MODIFY FILE (NAME =DB_SHANGHAI_log, FILENAME = ‘W:\LOG\DB_SHANGHAI_log.ldf‘)
GO
ALTER DATABASE DB_SHANGHAI SET ONLINE

--step 7 : 查看全部修改完成后的数据库情况
USE master
GO
SELECT name AS [Logical Name], physical_name AS [DB File Path],type_desc AS [File Type],
state_desc AS [State] FROM sys.master_files
WHERE database_id = DB_ID(N‘DB_SHANGHAI‘)
GO
/*
Logical Name    DB File Path                File Type    State
DB_SHANGHAI        X:\DATA\DB_SHANGHAI.mdf        ROWS        ONLINE
DB_SHANGHAI_log    W:\LOG\DB_SHANGHAI_log.ldf    LOG            ONLINE
*/

--step 8 : 关闭xp_cmdshell支持
USE master
GO
sp_configure ‘xp_cmdshell‘, 0
GO
RECONFIGURE WITH OVERRIDE
GO
sp_configure ‘show advanced options‘,0
GO
RECONFIGURE WITH OVERRIDE
GO

-------------------------
--摘抄自：http://www.cnblogs.com/nzperfect/archive/2012/12/19/2825298.html