Why Do WP Plugins Leave Unused Tables In The Database After Uninstall?

Before I tell you how to uninstall a database from an unused table, make sure you backup your database before dropping any tables. Also make sure that you drop the correct table because there can be multiple tables at the same time. 

Now that’s done let’s get right into it.

Why WP plugins leave unused tables in Database after uninstall

First off, as many WordPress users switch between plugins often, your settings are preserved by leaving the tables and rows in your database alone. All of your data will still be present if you subsequently reinstall the plugin, so this is good news. 

Here are a few reasons why plugins leave unused tables in Database after uninstall.

  • Preserving User Settings: If a user deactivates a plugin and later wants to reinstall it, it’s essential to keep their settings intact. Leaving the plugin tables in the database ensures that when the plugin is reinstalled, their settings are restored.
  • Preventing Data Loss: Accidental plugin uninstallation can result in data loss. By retaining the tables in the database, users can protect their data. If needed, they can easily restore the plugin along with their data.
  • Complex Table Relationships: Removing plugin tables can be tricky because plugins often create intricate relationships with other database tables. To avoid potential issues, many plugin developers choose to keep these tables in the database. This approach ensures system stability and a hassle-free user experience when managing plugins.

Implications of Leaving Unused Tables

The existence of unused tables in your database might seem harmless at first, but over time, these tables can have significant implications:

1. Performance Impact:

A bloated database can slow down your WordPress site. Queries take longer to execute, leading to slower page load times. This, in turn, can negatively affect user experience and SEO rankings.

Imagine you run an e-commerce website with a product catalog plugin. If this plugin leaves behind unused tables, the increased query load can make your customers wait longer for product pages to load. This could result in abandoned shopping carts and lost revenue.

2. Security Risks:

Unused tables are potential security vulnerabilities. If a malicious actor gains access to your website, they might exploit these tables to gain unauthorized access or corrupt your data.

Think of a contact form plugin that stores user-submitted data in your database. If you uninstall the plugin, but it leaves behind these tables, sensitive information could be at risk.

3. Database Maintenance Challenges:

Routine database maintenance can become cumbersome with unused tables cluttering the database. It can be challenging to identify and manage these tables manually, especially if you have numerous plugins installed.

Consider having a blog plugin with analytics tables that are not removed during uninstallation. These tables might contain large amounts of data that make your database backups and restores more complex and time-consuming.

Remove Unused WP Staging Plugin Database Tables

It’s possible that the presence of leftover WP Staging database tables is a result of an interrupted cloning process.

In the event you discover any residual database tables from the WP Staging plugin following the deletion of a staging site, it is advisable to remove them manually.

WP Staging database tables for staging sites employ specific table prefixes, such as:

– wpstg0_

– wpstg1_

– wpstg2_

– wpstgbak_

Most hosting providers offer the phpMyAdmin application, which provides a convenient means of eliminating all WP Staging database tables through the application’s user interface or by executing a SQL query.

unused tables

The SQL query to be executed in phpMyAdmin is as follows:




or TABLE_NAME LIKE 'wpstgtmp_%'

or TABLE_NAME LIKE 'wpstg0_%'

or TABLE_NAME LIKE 'wpstg1_%'

or TABLE_NAME LIKE 'wpstg2_%'

or TABLE_NAME LIKE 'wpstg3_%'

or TABLE_NAME LIKE 'wpstg4_%'

or TABLE_NAME LIKE 'wpstg5_%'

or TABLE_NAME LIKE 'wpstg6_%'

or TABLE_NAME LIKE 'wpstg7_%'

or TABLE_NAME LIKE 'wpstg8_%'

or TABLE_NAME LIKE 'wpstg9_%'

or TABLE_NAME LIKE 'wpstg10_%'

or TABLE_NAME LIKE 'wpstg11_%'

or TABLE_NAME LIKE 'wpstg12_%'

or TABLE_NAME LIKE 'wpstg13_%'

or TABLE_NAME LIKE 'wpstg14_%'

By deleting staging sites in the WP Staging plugin, you can effectively maintain the cleanliness of your site’s database and prevent unnecessary bloat.

Refining the Remaining Tables

Numerous plugins are available for optimizing and cleaning up unused database tables. A few examples of these plugins include:

  1. WP-Optimize
  1. WP-DBManager
  2. WP Performance Pack

Before utilizing any of these plugins, especially if they were once part of your database but have been reinstalled, it’s advisable to create a comprehensive backup of your website.


The issue of Unused Tables In The Database After Uninstall is a common concern for WordPress users, and it can have far-reaching implications on website performance and security. Understanding why this problem occurs and how to address it is crucial for maintaining a clean and efficient database.

By using specialized cleanup plugins, contacting developers for feedback, or performing manual cleanup with caution, you can ensure that your website remains in optimal condition. Regular maintenance and database cleanups will help you prevent the accumulation of unused tables and keep your WordPress site running smoothly. Don’t let these remnants hinder your website’s performance and security—take action today to maintain a clean and efficient database.

FAQs on Unused Tables In The Database After Uninstall

1. What are the risks of manually removing unused tables from the database?

Manually removing unused tables can be risky, as it requires knowledge of database management. If you accidentally delete the wrong table, you can break your website. Take a backup and continue with care at all times.

2. How can I identify which tables are no longer in use?

You can identify unused tables using database management tools like phpMyAdmin or by using dedicated plugins designed for this purpose.

3. Do all plugins leave behind unused tables when uninstalled?

No, not all plugins leave behind unused tables. It depends on the plugin developer and their implementation of the uninstallation process. Many reputable plugins are well-coded and remove unused tables correctly.

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