How to Repair Corrupt MySQL Database and Restore Data after MYD File Loss?

MYD (stands for MySQL Data) files are used by MySQL for storing the information in the databases and tables. The data of the tables is stored in the MYD file and the structure is stored in the FRM file. Sometimes, when restoring data from database files, you may face a situation where the MYD file is missing. This might happen if the MYD is deleted by mistake or by a malicious user. Sometimes, the MYD file can get deleted or encrypted due to ransomware or virus attacks. It might also happen that the file is corrupt due to a hardware problem or any other issue. This file is crucial for restoring/recovering data from tables. Below, we will see how to recover data if the MYD file is missing.

Ways to Recover Data when MYD File is Missing

If the MYD file is missing, the only way to restore data is from backup. If you have a recent backup of your database, you can easily restore the data from the backup.

If you do not have the latest backup, you can use professional software designed to repair corrupted MySQL database files. One such software is Stellar Repair for MySQL. This software can repair the corrupted MySQL database and recover all the objects. It can restore tables, primary keys, views, and other database objects from corrupt database files. This software is compatible with MySQL versions 8, 6, 5, 4, and 3.

Stellar Repair for MySQL supports Windows and Linux operating systems. This software supports Windows 8, 10, 11, Linux CentOS 7, Red Hat Enterprise 7, and Ubuntu 16.04 and 18.04.

There are 2 editions available of this software:

• Technician Edition: This can restore corrupt databases and database objects, like tables, views, etc.
• Toolkit Edition: Toolkit has all the features of the Technician edition, but it can also analyze the MySQL log files.

Here’s how to use this software:

Note: You need to stop the MySQL service first as the software cannot work when the file is in use.

• Download, install, and launch the software.
• Click on the Browse button to select the path of the database file and press OK.

• Select the database you want to repair and press the Repair button.

• Once the database file is repaired, you will see all the recoverable objects.
• You can select the objects (tables, views, triggers, primary keys, etc.) you want to restore and click on the Save button.

• You can save the data in a new database file or other formats, like Excel, HTML, and CSV. For example, you can save the data from a table in CSV file. You can also save the data as a script. You can run the script and restore the information to a different place.

Tips to Prevent Data Loss in Such Situations

• It is always recommended to back up your database periodically.
• Make sure to run backups regularly. You should run the backups at least once a day. If your data is critical, you can run the backups hourly. If your data does not change much, a daily backup may be enough.
• Make sure to regularly check the disk status. This will help detect any failures in the hardware.
• You can use RAID storage configuration. RAID 1 or RAID 5 provides redundancy of data. This can help prevent data loss in case of hard disk failure.
• Always have a UPS (Uninterruptible Power Supply) to prevent power-out problems.
• If your hard drive is old, replace it.
• Try to have your backups on a server outside the office. The cloud is a great option to store your backups. This will save your data in case of disasters that affect the entire office.
• Make sure to have your operating system and MySQL Server updated with the latest updates.
• Make sure to secure your network not only from external attacks but also from disgruntled employees. Make sure to provide only the required permissions to employees and do not provide extra permissions unless it is urgent.
• Train your employees on how to identify and combat security threats, such as spam and viruses.
• Update your system with the latest patches and updates to fix security holes.
• Install the best anti-virus, anti-malware, and anti-spam software to prevent system from virus or malware attacks.

Conclusion

You may fail to restore the data from MySQL database if MYD file is missing. The file might be deleted or become inaccessible to users. Above, we have learned how to restore data if the MYD file is missing. You can restore data from the backup. In case the backup is obsolete or not available, you can use a MySQL database repair tool, such as Stellar Repair for MySQL. This tool can help you recover data from corrupt MySQL database files. You can download the tool to scan the database file and preview the recoverable data.

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About The Author

Bharat Bhushan

Bharat Bhushan is an experienced technical Marketer working at Stellar Data Recovery - expertise in data care. He is skilled in Microsoft Exchange Database, MSSQL Database troubleshooting & data warehousing. He is a Management Post Graduate having a strong grip in Technology & certified in SAP-SD, Oracle 10g & Informatica Powercenter 9.1.