Joomla Error 28 from storage engine SQL

A not so documented error that Joomla sites can have is error 28 from storage engine sql.Due to this error it isn’t possible to create new MySQL connections and your website will display multiple error messages displaying this error.

The problem and resolution lays in the hands of the webhoster or system engineer.
Joomla uses the /tmp folder to create a file every time a MySQL connection is established. Now this folder can run out of space or the maximum number of files / folder is reached.

The resolution is then quite simpel, clean out the /tmp folder. You can do this with the following command

If you want you schedule a cron job to do this on for example a weekly basis.

Open the cron editor

And add the following line

Close and save the file

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