将 SQL 数据库文件 MDF 和 LDF 移动到新位置

Question

环境：

• SQL Server 2008 R2
• 数据库未接收到活动事务。

在生产环境中，我需要将 MDF 和 LDF 文件移动到新驱动器。由于我有一个时间窗口来停止活动事务，我想我可以只备份数据库，然后在将文件组配置到新位置时恢复它。

我认为这比使用新文件名分离和重新附加数据库要好得多。

由于我是新手，想在这里咨询专家。非常感谢任何建议/建议。

Answer 1

这是一个简单的例子。它假定您的数据库有一个.mdf（数据）文件和一个.ldf（日志）文件。我将以[model]数据库为例。

--First, make note of the current location of the db files.
--Copy and paste the physical_names somewhere.  Trust me, if you forget 
--where the files were originally, this will save you some heartache.
SELECT d.name, f.name, f.physical_name
FROM master.sys.master_files f
JOIN master.sys.databases d
    ON d.database_id = f.database_id
WHERE d.name = 'model'  --Replace with the name of your db.

--Now set the new file paths.  
--You can run the ALTER DATABASE statements while the db is online.

--Run once for the mdf/data file.
ALTER DATABASE [model]  --Replace with the name of your db.
MODIFY FILE 
(
    NAME = 'modeldev',  --this is the "logical" file name.
    FILENAME = 'D:\SqlData\model.mdf'  --Replace with the new path\filename.
)

--Run once for the ldf/data file.
ALTER DATABASE [model]  --Replace with the name of your db.
MODIFY FILE 
(
    NAME = 'modellog',
    FILENAME = 'D:\SqlData\modellog.ldf'  --Replace with the new path\filename.
)


--When business rules allow, take the db OFFLINE.
ALTER DATABASE [model]  --Replace with the name of your db.
SET OFFLINE

--Move the physical db files to the new location on disk.

--Bring the db back ONLINE to complete the task.
ALTER DATABASE [model]  --Replace with the name of your db.
SET ONLINE