How to Fix the Database Connection Error in WordPress ?

There are a few potential causes for a database connection error in WordPress, and the solution will depend on the specific issue. Here are a few things to try:

  1. Check your wp-config.php file: Make sure that the database name, username, and password in your wp-config.php file are correct. If they are not, update them to the correct values.
  2. Check your database server: Make sure that your database server is running and that there are no issues with the server that could be causing the connection error.
  3. Contact your hosting provider: If you’re unsure of the correct database settings, contact your hosting provider for assistance.
  4. Check your plugin and theme: Deactivate all plugins and switch to a default theme to see if the problem is resolved. If it is, then reactivate your plugins and themes one by one to identify which one is causing the issue.
  5. Check your .htaccess file: Sometimes, a corrupt .htaccess file can cause a database connection error. Rename your .htaccess file to something like .htaccess_old and check if the error is resolved.
  6. increase the PHP Memory Limit : If you see an error message that says “Allowed memory size exhausted,” you may need to increase the PHP memory limit. You can do this by editing the wp-config.php file and adding the following line: define( ‘WP_MEMORY_LIMIT’, ‘256M’ );

If none of these solutions work, you may need to seek help from a developer or your hosting provider.

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