Question

如何完整的修改一个数据库的名称

Answer 1

/*
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