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SQL查询与修改数据库逻辑文件名,移动数据库存储路径示例 收藏
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-- Subject: SQL查询与修改数据库逻辑文件名,移动数据库存储路径示例
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USE mydb
GO
--1.查询当前数据库的逻辑文件名
SELECT FILE_NAME(1) AS 'File Name 1', FILE_NAME(2) AS 'File Name 2';
--或通过以下语句查询:
--SELECT name FROM sys.database_files
/*
File Name 1 File Name 2
------------------- --------------------
mydb mydb_log
(1 行受影响)
*/
--2.修改数据文件或日志文件的逻辑名称
ALTER DATABASE [mydb]
MODIFY FILE ( NAME = mydb, NEWNAME = new_mydb )
ALTER DATABASE [mydb]
MODIFY FILE ( NAME = mydb_log, NEWNAME = new_mydb_log )
--查询更改后的名称:
SELECT FILE_NAME(1) AS 'File Name 1', FILE_NAME(2) AS 'File Name 2';
/*
File Name 1 File Name 2
------------------- --------------------
new_mydb new_mydb_log
(1 行受影响)
*/
--3.若要将数据文件或日志文件移至新位置,先OFFLINE把文件MOVE到相应的位置,然后再ONLINE
-- 详细参考以下步骤
--3.1 查询数据文件或日志文件当前存放路径:
SELECT physical_name FROM sys.database_files
/*
physical_name
-------------------------------------------------------------------------------------------
D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\mydb.mdf
D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\mydb_log.ldf
(2 行受影响)
*/
--3.2 移动路径
USE [master]
GO
--3.2.1 关闭所有进程
DECLARE @str VARCHAR(500);
SET @str = '';
SELECT @str = @str + 'KILL '+RTRIM(spid)+';'+CHAR(13)+CHAR(10)
FROM master.dbo.sysprocesses
WHERE dbid=DB_ID('mydb');
EXEC(@str);
GO
--3.2.2 设置数据库脱机
ALTER DATABASE [mydb] SET OFFLINE
GO
--3.2.3 移动数据文件与日志文件(为确保数据安全,建议改move为copy,复制成功后再删除源文件)
EXEC master..xp_cmdshell 'move "D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\mydb.mdf" "E:\DBTEST"',NO_OUTPUT
EXEC master..xp_cmdshell 'move "D:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\mydb_log.LDF" "E:\DBTEST"',NO_OUTPUT
GO
--3.2.4 设置新的存储路径
ALTER DATABASE [mydb] MODIFY FILE (NAME = new_mydb,FILENAME = 'E:\DBTEST\mydb.mdf')
ALTER DATABASE [mydb] MODIFY FILE (NAME = new_mydb_log,FILENAME = 'E:\DBTEST\mydb_log.ldf')
GO
--3.2.5 设置数据库联机
ALTER DATABASE [mydb] SET ONLINE
GO
--3.2.6 查询新的路径
USE mydb
GO
SELECT physical_name FROM sys.database_files
/*
physical_name
------------------------------
E:\DBTEST\mydb.mdf
E:\DBTEST\mydb_log.ldf
(2 行受影响)
*/
如果报“SQL Server 阻止了对组件 'xp_cmdshell' 的 过程'sys.xp_cmdshell' 的访问
解决方法:执行下面的语句
-- To allow advanced options to be changed.
EXEC sp_configure 'show advanced options', 1
GO
-- To update the currently configured value for advanced options.
RECONFIGURE
GO
-- To enable the feature.
EXEC sp_configure 'xp_cmdshell', 1
GO
-- To update the currently configured value for this feature.
RECONFIGURE
GO
执行完之后就不会再报SQL Server 阻止了对组件 'xp_cmdshell' 的 过程'sys.xp_cmdshell' 的访问的错误了最新回复

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