Error type:database error

Error name:Error establishing database connection

Wrong description:Database corruption or incorrect login credentials, corrupt WordPress files, database server issues, and traffic surges can all cause this error to occur.

“Error Establishing a Database Connection” is probably one of the most common and scariest errors a WordPress user can encounter. This definitely goes hand-in-hand with the White Screen of Death (WSOD). This error means that your website no longer communicates or has access to the WordPress database and the entire website is down.

For such errors, webmasters should not take things lightly, and should immediately try to solve this problem, which directly affects traffic, SEO, and more. But don’t worry, today we will discuss some common situations that lead to this error, and corresponding solutions.

The ultimate solution to Error Establishing a Database Connection in WordPress

What is an error establishing a database connection?

Common situations that cause this error

How to fix “Error establishing database connection”

What is an error establishing a database connection?

All information on a WordPress site, such as post data, page data, meta information, plugin settings, login information, etc., is stored in a MySQL database. The only data not stored is media content such as images, and theme/plugin/core files such as index.php, wp-login.php, etc. When someone visits your website, PHP executes code on the page and queries the information from the database, then displays it to the visitor’s browser.

If for some reason this doesn’t work, there will be an error establishing the database connection as shown below. The whole page is blank because the connection is not working and no data can be retrieved to render the page. Not only did this break the front end of the website, but it also made the WordPress dashboard inaccessible.

However, visitors may not see this error on the front end right away. That’s because the site cache is still accessible until the cache expires.

When a visitor tries to access your site when this error occurs, it will generate a 500 HTTP status code in your logs. The same status code gives “Internal Server Error”. This means that there was a problem with the server and the requested resource was not delivered. When everything is fine, your site will generate a 200 HTTP status code, which means everything is fine.

The ultimate solution to Error Establishing a Database Connection in WordPress

Common situations that cause this error

So why exactly does this happen? Well, here are some common reasons. Don’t worry, we’ll take a closer look at each one so you know how to fix them. Usually, you can fix this error within 15 minutes.

The most common problem is incorrect database login credentials. WordPress sites need to use database-related login information to connect to their corresponding MySQL database.

Database is corrupted. Because of the theme, plugins can be installed and uninstalled so much, years of constant removal and installation can sometimes lead to database corruption. This could be due to missing or individually corrupted tables, or some information was accidentally deleted.

There may be corrupt files in your WordPress installation. This can sometimes even happen due to hackers.

Database server problem. Several things can be wrong on the web host side, such as database overload due to traffic spikes or unresponsiveness due to too many concurrent connections. This is common with shared hosting because they use the same resources for many users on the same server.

Traffic surges. Depending on the web host you use, your server may not be able to handle many concurrent database connections. An increase in traffic may cause temporary problems with the database.

How to fix “Error establishing database connection”

Before you begin troubleshooting errors, it is recommended that you first make a database backup, as many of the following recommendations involve manipulating the information in the database. Regardless of your skill level, you should always make a backup before attempting to modify your WordPress site database.

You can use a WordPress backup plugin such as VaultPress or WP Time Capsule to back up your files and databases.

If you are a Pagoda panel user, then the website file and database backup is very simple, enter the Pagoda control panel, find “Scheduled Tasks” in the left menu, enter the interface to find the backup database and backup website, and execute it manually.

When a visitor tries to access your site when this error occurs, it will generate a 500 HTTP status code in your logs. The same status code gives “Internal Server Error”. This means that there was a problem with the server and the requested resource was not delivered. When everything is fine, your site will generate a 200 HTTP status code, which means everything is fine.

You can use a WordPress backup plugin such as VaultPress or WP Time Capsule to back up your files and databases.

If you are a Pagoda panel user, then the website file and database backup is very simple, enter the Pagoda control panel, find “Scheduled Tasks” in the left menu, enter the interface to find the backup database and backup website, and execute it manually.

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