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MySQL Repair and Optimize Tables in phpMyAdmin

This tutorial teaches you how to repair and optimize your MySQL tables with phpMyAdmin. If you're experiencing issues with your database, such as slow query execution, corrupted tables, or frequent crashes, repairing and optimizing your database can help improve its performance and stability.

With phpMyAdmin, repairing and optimizing your database is a simple process that can be done quickly and easily. Follow the steps outlined in this tutorial to get started.

Important note: Please back up any database on the account before making changes

Importance of Repairing and Optimizing Database Tables

Repairing and optimizing database tables is essential to ensure the database operates efficiently and effectively. There are several reasons why someone should care about repairing and optimizing tables, such as:

  1. Improved performance: Over time, database tables can become fragmented, leading to slower performance. By repairing and optimizing tables, you can prevent mysql table fragmentation, resulting in faster query times and improved overall performance.
  2. Enhanced stability: If database tables become corrupt or damaged, it can lead to data loss or other stability issues. Repairing tables can prevent data loss and ensure the stability of the database.
  3. Reduced resource consumption: When database tables are not optimized, it can lead to excessive resource consumption, such as CPU and memory usage. Optimizing tables can reduce resource consumption, lower costs, and improve server performance.

Repair and Optimize WordPress with PhpMyAdmin

  1. Log in to your Bluehost Account Manager.
  2. Navigate to the menu on the left side and click on the Hosting tab.
    Bluehost Hosting Tab
  3. Scroll down to the Quick Links section and then click the CPANEL button.
    Bluehost Hosting Tab - Quick Links cPanel
  4. Go to the Databases section and click on phpMyAdmin.
    Bluehost cPanel Databases phpMyAdmin
  5. To repair or optimize a database, look for the list of databases on the left-hand side. Then, select the database that you want to repair or optimize.
  6. You can see all the tables in your database on the right side. Scroll down to the bottom and select Check All.
    Bluehost cPanel Databases phpMyAdmin Check All
  7. Select the Repair Table option from the With Selected drop-down list.
    Bluehost cPanel Databases phpMyAdmin Repair Table
  8. This will list all the tables, with "OK" listed next to them.
  9. Click on the Structure tab.
  10. To optimize the table, click Check All again and select the Optimize table option from the drop-down menu.
    Bluehost cPanel Databases phpMyAdmin Optimiz Table
  11. Your SQL query has been executed successfully.

This process can fix many MySQL errors. It is recommended that these steps are performed frequently to keep any database in good condition.

In addition to manually repairing and optimizing database tables, alternative solutions are also available. For example, command-line tools like MySQLcheck or Pg_filedump can automate the repair and optimization of tables. Additionally, automated scripts can be set up to regularly check and optimize tables, reducing the need for manual intervention. It's important to consider the specific needs of the database and choose the solution that best fits the situation.

Still Not Fixed?

If you are using InnoDB as a storage engine, we have noticed an issue regarding database size. For various reasons, it occasionally occurs that memory allocated to a customer for database usage is not released when the database no longer requires it. This memory does not appear as in use when the database size is viewed using phpMyAdmin. However, since it is still allocated to the customer account, the server-side administrative tools will include it in calculations of overall database memory usage and determine whether an account has exceeded the database memory limits specified in the terms of Service.

Pro Tip! The easiest way to free this "hidden" memory is to export the database information, completely clear the database, and re-import the information. This will cause phpMyAdmin and the server-side tools to report the actual database usage and prevent account deactivation due to the "hidden" memory usage.

The repair/optimize function in phpMyAdmin will not correct this issue. The server-side tools report complete memory usage and the information required to determine the server's overall performance. That is why the server-side tools are used to determine usage for ToS compliance purposes. The phpMyAdmin does not correctly report all memory usage allocated to the account and is, therefore, not used for these calculations.


It is important to regularly repair and optimize your MySQL database tables to ensure optimal performance and stability. PhpMyAdmin offers a user-friendly interface for managing MySQL databases, including features for repairing and optimizing tables. Following the steps outlined in this article, you can quickly repair and optimize your tables with phpMyAdmin to keep your database running smoothly. Pay attention to this important aspect of database management, and take advantage of the tools available to you in phpMyAdmin. For further insight, refer to this article on how to create and delete MySQL databases and users.

If you need further assistance, feel free to contact us via Chat or Phone:

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You may also refer to our Knowledge Base articles to help answer common questions and guide you through various setup, configuration, and troubleshooting steps.

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