Home Database Mysql Tutorial 只有mdf文件和ldf文件,怎么恢复数据库。

只有mdf文件和ldf文件,怎么恢复数据库。

Jun 07, 2016 pm 03:41 PM
mdf only how recover database document

原来刚学数据库的时候,不知道数据库的备份和还原,就直接去拷贝数据库mdf和ldf文件,后来会了数据库的备份和还原,一直也就没有注意拷贝mdf和ldf带来的问题。 现在需要参考原来拷贝的代码和数据库(拷贝的mdf和ldf文件),结果发现数据库还原不上了。我就在

原来刚学数据库的时候,不知道数据库的备份和还原,就直接去拷贝数据库mdf和ldf文件,后来会了数据库的备份和还原,一直也就没有注意拷贝mdf和ldf带来的问题。

现在需要参考原来拷贝的代码和数据库(拷贝的mdf和ldf文件),结果发现数据库还原不上了。我就在百度搜索,出来了不少相关网页,打开后发现基本都是一个相同解决方案,列出ABCDEFG或者12345几项去解决,可惜,不成功。那就继续搜索,幸好在微软的MSDN网站上找到了类似的文档,通过分离和附加来移动数据库。我是个菜鸟,不知道什么是分离、附加数据库,汗颜,粗略看了一下,似懂非懂,不过发现了附加移动的数据库就是通过mdf和ldf文件恢复(创建)数据库。我试了一下,居然一下成功,相当的简单。

1、把mdf文件和ldf文件拷贝到数据库的默认路径C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA里;

2、在sqlserver里新建个查询,执行下面代码;

只有mdf文件和ldf文件,怎么恢复数据库。

<span>1</span> <span>USE</span><span> master;
</span><span>2</span> <span>GO</span>
<span>3</span> <span>CREATE</span> <span>DATABASE</span><span> NewFile
</span><span>4</span>     <span>ON</span> (FILENAME <span>=</span> <span>'</span><span>C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\File.mdf</span><span>'</span><span>),
</span><span>5</span>     (FILENAME <span>=</span> <span>'</span><span>C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\DATA\File_log.ldf</span><span>'</span><span>)
</span><span>6</span>     <span>FOR</span><span> ATTACH;
</span><span>7</span> <span>GO</span>
Copy after login

只有mdf文件和ldf文件,怎么恢复数据库。

3、刷新数据库,就出现了新的数据库NewFile;

根据mdf文件和ldf文件还原成功,就这么简单。我用的是sqlserver2008,2005是否可以,有待证明。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1266
29
C# Tutorial
1239
24
iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos iOS 18 adds a new 'Recovered' album function to retrieve lost or damaged photos Jul 18, 2024 am 05:48 AM

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

Detailed tutorial on establishing a database connection using MySQLi in PHP Detailed tutorial on establishing a database connection using MySQLi in PHP Jun 04, 2024 pm 01:42 PM

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())

How to handle database connection errors in PHP How to handle database connection errors in PHP Jun 05, 2024 pm 02:16 PM

To handle database connection errors in PHP, you can use the following steps: Use mysqli_connect_errno() to obtain the error code. Use mysqli_connect_error() to get the error message. By capturing and logging these error messages, database connection issues can be easily identified and resolved, ensuring the smooth running of your application.

How to identify genuine and fake shoe boxes of Nike shoes (master one trick to easily identify them) How to identify genuine and fake shoe boxes of Nike shoes (master one trick to easily identify them) Sep 02, 2024 pm 04:11 PM

As a world-renowned sports brand, Nike's shoes have attracted much attention. However, there are also a large number of counterfeit products on the market, including fake Nike shoe boxes. Distinguishing genuine shoe boxes from fake ones is crucial to protecting the rights and interests of consumers. This article will provide you with some simple and effective methods to help you distinguish between real and fake shoe boxes. 1: Outer packaging title By observing the outer packaging of Nike shoe boxes, you can find many subtle differences. Genuine Nike shoe boxes usually have high-quality paper materials that are smooth to the touch and have no obvious pungent smell. The fonts and logos on authentic shoe boxes are usually clear and detailed, and there are no blurs or color inconsistencies. 2: LOGO hot stamping title. The LOGO on Nike shoe boxes is usually hot stamping. The hot stamping part on the genuine shoe box will show

How to use database callback functions in Golang? How to use database callback functions in Golang? Jun 03, 2024 pm 02:20 PM

Using the database callback function in Golang can achieve: executing custom code after the specified database operation is completed. Add custom behavior through separate functions without writing additional code. Callback functions are available for insert, update, delete, and query operations. You must use the sql.Exec, sql.QueryRow, or sql.Query function to use the callback function.

How to save JSON data to database in Golang? How to save JSON data to database in Golang? Jun 06, 2024 am 11:24 AM

JSON data can be saved into a MySQL database by using the gjson library or the json.Unmarshal function. The gjson library provides convenience methods to parse JSON fields, and the json.Unmarshal function requires a target type pointer to unmarshal JSON data. Both methods require preparing SQL statements and performing insert operations to persist the data into the database.

How to connect to remote database using Golang? How to connect to remote database using Golang? Jun 01, 2024 pm 08:31 PM

Through the Go standard library database/sql package, you can connect to remote databases such as MySQL, PostgreSQL or SQLite: create a connection string containing database connection information. Use the sql.Open() function to open a database connection. Perform database operations such as SQL queries and insert operations. Use defer to close the database connection to release resources.

PHP connections to different databases: MySQL, PostgreSQL, Oracle and more PHP connections to different databases: MySQL, PostgreSQL, Oracle and more Jun 01, 2024 pm 03:02 PM

PHP database connection guide: MySQL: Install the MySQLi extension and create a connection (servername, username, password, dbname). PostgreSQL: Install the PgSQL extension and create a connection (host, dbname, user, password). Oracle: Install the OracleOCI8 extension and create a connection (servername, username, password). Practical case: Obtain MySQL data, PostgreSQL query, OracleOCI8 update record.

See all articles