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How to fix problems with the database and WordPress files

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Have you found that your WordPress site is constantly unstable and all you can say is, “I didn't do anything, I swear !? Yet you see errors that say your files or your database is damaged, missing or corrupted.

These are the errors that appear and disappear regularly:

"Warning: require_once (path / to / file.php) [function.require-once]: failed to open stream: No such file or directory in ..."

Or it may be the error: " Can not suit les database connection »

Don't worry, because today I will tell you how these errors happen and how to fix them and most importantly, I will tell you why it is likely that the problem is definitely not your fault.

What can be the possible causes?

It can be difficult to track down the exact cause of any of these errors, as there are a considerable number of probable causes.

Here are the main reasons why your database could be corrupted, missing or otherwise crushed:

  • Database credentials are not entered correctly in your "wp-config.php" file.
  • Your server is overloaded
  • There was a hardware crash on the server
  • You have a bug with MySQL, or the version of PHP you are using or your plugins and themes.
  • There was a server interrupt such as the memory limit that was reached.
  • Your site may have been hacked.

Whatever the reason, there are some methods you can use to correct errors on your WordPress blog.

Backup and Restore

The best solution to fix the error and the broken file or a problem with the database is to restore your site from a backup you already have. If you don't have a backup that you can restore, then there are other solutions you can take.

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Before giving yourself the other options at once, you need to back up your entire site. Even if the latter is not working properly, things could get even worse so it is better to have something rather than have nothing at all.

Here is a list of tutorials that you can consult to learn more about backup methods in WordPress:

How to fix a damaged database

There are two ways to repair a damaged database.

If you see an "Unable to establish an error connecting to the database" message, you can refer to this tutorial for details on how to resolve this problem: How to fix "the error establishing a database connection connection to the database on WordPress » https://blogpascher.com/plugins-wordpress/comment-corriger-lerreur-detablissement-dune-connexion-a-la-base-de-donnees-sur-wordpress.

There is also one thing you can try that works for most issues, including the case where your database is corrupt.

You can add this line to your "wp-config.php" file, which is located at the root of your installation:

define ( 'WP_ALLOW_REPAIR', true);

You can add it anywhere in your file as long as it hasn't been embedded in the middle of a function, for example. I recommend placing it directly before the following line:

/ * That's all, stop editing! Happy blogging. * /

Keep in mind that you only need to be logged in to view this page when you have finished repairing your database, be sure to delete the row mentioned earlier. Otherwise, everyone could go to this page.

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When you visit the link, you can choose a form that prompts you to repair the database.

Once the process is complete, your site will be fully repaired (at least the database).

If that does not work, you can repair your database via phpMyAdmin.

Once logged in, click on your database on the list on the left, scroll down and click the “Check All” checkbox. From the drop-down list next to it, select “Repair Table”.

Table repair

How to correct missing or corrupted files

What if your files are missing or corrupted? You can also correct them.

If you recently installed an SSL certificate on your site, your images might appear missing. To resolve this issue, replace your image links to include the prefix https.

For most other issues, replacing the offending file with a fresh copy should resolve the issue.

You can use a FTP client to replace the core WordPress files with new copies can be found by downloading a copy of the software fromWordPress installation.

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After unzipping the ZIP file, you can upload the new files to your site. Just make sure to leave your repertoire / Wp-content / intact, unless you want to lose all media files and images that you have downloaded to your site.

You can also try with the plugins and themes you have installed. The only difference is that instead of uploading a new copy of WordPress, you upload a fresh copy of the plugins and themes files.

That's it for this tutorial, I hope it will allow you to correct errors on the database and on your blog files. If you have any questions, please do not hesitate.

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