Support » Fixing WordPress » mystery autoload options

  • I have a 7-year-old site and am in the process of cleaning up the database on one of my sites, removing some old tables left behind by prior plugins and examining autoloads.

    One of the largest autoloaded tables is one called “pdt_case_3be5abbcc2”. I’m puzzled by what it is.

    And there are several similarly named tables:

    Does anyone happen to know what these are, and if I’d be safe to delete them? Googling turns up nothing.

    The link below is to a pastebin of the contents of the largest one. It mentions several plugins, some of which I still use and others which have been uninstalled. The content of a couple of the others is very similar — mention of a mix of plugins both active and now-uninstalled.

    Thanks for your help.

    The page I need help with: [log in to see the link]

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  • Moderator bcworkz


    Sorry for the slow reply. None of those tables are part of a core WP installation. My concern would be that they are part of an active plugin you are still using. If you are reasonably sure they are not part of a current plugin and you wish to delete them, I urge you to first export the tables as an SQL backup. Then if it turns out to be a mistake you can restore the tables.

    If you want to be even more cautious, first backup and drop the two pdt_tmp_active_plugins_* tables and see if there are any adverse effects. Those names seem to be less important than the others.

    The fact current plugins are mentioned in these tables isn’t particularly concerning to me. An active plugin would not typically refer to itself in a table.

    Realize that deleting data always carries some risk, even with backups. Backups have been know to be unable to restore missing data. Generally speaking, doing something irrevocable based on the say so of some stranger on the internet is not the wisest action. You are the one actually removing data, so any consequences of such action will be entirely your responsibility. Proceed carefully. You’ll probably be fine, but I cannot guarantee it.

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