How to Fix the Most Common WordPress Database Errors
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How to Fix the Most Common WordPress Database Errors

In WordPress, database errors occur during core installation, MySQL queries, and backup routines. Users may encounter errors while querying WordPress databases with a command line interface – such as SQL statements.

In typical scenarios, WordPress users don’t count database errors unless involved in developing, programming, or remotely administrating a WordPress database.

However, this article will explore WordPress database errors and procedures for fixing them.

Fix the Most Common WordPress Database Errors

When fixing WordPress database errors, we must look into the root causes. For example, a WordPress core installation may show a database error due to invalid credentials. Similarly – while managing a WordPress database with a command line, users can face protocol errors.

Let’s address the most common WordPress database errors and learn how to fix them as a beginner.

Error establishing a Database connection

WordPress fails to establish a database connection when credentials in wp-config.php are incorrect.

The wp-config.php file is located in the WordPress root directory on the server. It contains the following information and can cause errors if it contains incorrect information.

  1. Database name
  2. Database Username
  3. Database password
  4. Database server

Let’s confirm if the credentials in the wp-config.php file are correct.

Head over to log into Hosting cPanel and locate MySQL Databases, as shown in the screenshot below.

WordPress Database Error

You can obtain WordPress’s database name and username and change your password there. In most cases, localhost is the database server, or you can ask your hosting representative for assistance.

Next, return to Hosting cPanel -> File Manager and edit the wp-config.php file. Here, you need to confirm whether the credentials in wp-config.php are correct.

Next, check if the issue has been resolved. If you’ve auto-installed WordPress, you’ll need to ask your Hosting agents for the database name, username, password, and localhost if you’re not confident obtaining them yourself from cPanel options.

If the problem persists, you need to take a different approach to fix the problem.

The following approach helps users load WordPress’ built-in feature to repair database issues.

Add the following code to wp-config.php just before the line says, “That’s all; stop editing! Happy blogging.”

define(‘WP_ALLOW_REPAIR’, true);

Once done, access the following URL in the browser.

http://www.yoursite.com/wp-admin/maint/repair.php

The URL loads the WordPress database repair Tool. Take action accordingly, and after completion, make sure you’ve removed the code from wp-config.php.

On the other hand, a different approach in cPanel can help. Log into Hosting cPanel options and locate phpMyAdmin. The next page shows a list of databases. Open your site’s database, select all tables, and choose the Repair Table option from the short menu.

WordPress database error: Database is limited

If your site’s database is full and you are experiencing admin page crashes in WordPress, you need to look into more details.

The approach to solving such issues is to clean up your site’s database and remove extra garbage from Tables. If the problem persists, look into the debug.log file in cPanel -> File Manager and confirm whether you can see the following error.

WordPress database error: Database is limited

In this case, the problem may persist even if the free space in the database is available. The error is a mix of the WordPress database and the Hosting agent.

In this case – you should ask for assistance from Hosting representatives. Once resolved, you can confirm and see that you don’t need extra precautions.

CREATE Command Denied to User

In WordPress, the Command Denied to User error occurs when a user does not have adequate permissions on a WordPress database.

When CREATE Command Denied to User error occurs, the straightforward reason shows the specific user has no permission to create Tables or Columns in a WordPress database.

Let’s learn how to solve command-denied errors in a WordPress database.

First, you can check for users’ permissions in the Hosting cPanel. In this case, go to the Hosting cPanel options and locate Database Users under MySQL Databases, as shown in the screenshot below.

WordPress Database Error

On the next page, you can see existing databases, usernames, and user access levels for various databases.

Here, you can choose a user, edit its privileges on a specific database, and save changes. Finally, you’re ready to proceed and confirm that the error has been fixed.

Second, you can proceed to create a new database user instead. Once you have made one, you must update the credentials in the wp-config.php file.

Note: Creating a new user for the WordPress database is not recommended unless you can alter permissions for existing users. Once completed, check if the problem needs more attention.

Error 145

WordPress may result in Error 145 if a table in the database needs repairing.

As MySQL powers WordPress sites, repairing WordPress databases with phpMyAdmin is comparatively easy in cPanel options.

To get started, log into your hosting cPanel and locate phpMyAdmin. Remember to back up your site’s database before you perform the repairing routines.

As described above – phpMyAdmin shows a list of existing site databases. To proceed, choose your site’s database, select its Tables, and choose Repair Tables from the menu, as shown in the screenshot below.

WordPress Database Error

If, for example, you need more Technical expertise, ask your Hosting support representative for assistance.

Error 28

While Error 28 comes from MySQL, you can also check if a database repair fixes the problem in WordPress.

An error 28 occurs when no space is available in the /TMP directory on the server. Such scenarios happen when the number of files in /TMP is high, although space is available in the directory.

You can consult your Hosting support channel for more information on fixing error 28.

Unknown Column

A WordPress database may show an Unknown Column error if a column in a WordPress database is missing.

In most cases, such errors occur when updating the WordPress core fails. The rule of thumb is that you should manually update WordPress core again. For more information on how to update WordPress manually, read this detailed tutorial on WordPress official website.

Alternatively – check if your query syntax has errors while running a database query. In most cases, such scenarios occur when admins need to alter the WordPress database with command-line interfaces.

Final Thoughts

If you know how to handle WordPress manual installation, you can fix WordPress database errors quickly.

When fixing database issues, make sure you’ve taken WordPress backups. If, for example, you need to figure out what you’re doing, don’t bother changing WordPress infrastructure.

In this case, let us help you fix WordPress database errors with one-time support, monthly deals, or WordPress support services.

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