How Can I Recover a MySQL Database Using Only Its Physical Files?

Recovering a MySQL Database from Physical Files

When confronted with a lack of traditional backup channels like mysqldump, retrieving data from physical database files becomes essential. Understanding the intricate relationship between MyISAM tables and their associated files is crucial for successful recovery.

In the case of your database, each table is composed of three distinct files:

• FRM: Captures the table's structure and definition.
• MYD: Stores the actual data records.
• MYI: Houses any indexes applied to the table.

To restore your database, simply copy these files into the appropriate MySQL database folder. By default, on Linux systems, this folder is located at /var/lib/mysql/. Crucially, this process should be executed while the MySQL server is offline. Once the physical files are in place, restarting the server will enable access to the restored database.

This method is particularly applicable for smaller databases, as it eliminates the need for complex recovery procedures. However, for larger databases, using traditional backup tools remains advantageous due to the convenience and efficiency they offer.

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