Title: Not cleariing database cache Last modified: March 4, 2024 --- # Not cleariing database cache * Resolved [traqbar](https://wordpress.org/support/users/traqbar/) * (@traqbar) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/) * Hello, * I have been cleaning my database and dropping some tables – issue is that my site is now crashing as aour plugin continues to try to run quieries on table that do not exist. I have tried clearing all the caches – deleting cache folders on the server but I do not know where the db chaces are being stored. I am geeting the below error message for example. - Why is this not clearing when I select to purge all? - How can I get this done now eg: manually? * Thanks * AH01071: Got error ‘PHP message: WordPress database error Table ‘production.wp_8_actionscheduler_actions’ doesn’t exist for query SELECT a.action_id FROM wp_8_actionscheduler_actions a WHERE 1=1 AND a.hook=’action_scheduler/migration_hook’ AND a.status IN (‘in- progress’) ORDER BY a.scheduled_date_gmt ASC LIMIT 0, 1 made by require(‘wp-blog- header.php’), require_once(‘wp-load.php’), require_once(‘/var/www/production/ shared/wp-config.php’), require_once(‘wp-settings.php’), do_action(‘wp_loaded’), WP_Hook->do_action, WP_Hook->apply_filters, Action_Scheduler\Migration\Controller- >schedule_migration, Action_Scheduler\Migration\Scheduler->is_migration_scheduled, as_next_scheduled_action, ActionScheduler_Store->query_action, ActionScheduler_HybridStore- >query_actions, ActionScheduler_DBStore->query_actions, W3TC\DbCache_WpdbNew- >query, W3TC\DbCache_WpdbInjection_QueryCaching->query, W3TC\_CallUnderlying- >query, W3TC\DbCache_WpdbNew->query, W3TC\DbCache_WpdbInjection->query, W3TC\ DbCache_WpdbNew->default_query; * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fnot-cleariing-database-cache%2F%3Foutput_format%3Dmd&locale=en_US) to see the link]_ Viewing 8 replies - 1 through 8 (of 8 total) * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17471902) * Hello [@traqbar](https://wordpress.org/support/users/traqbar/) * Thank you for reaching out and I am happy to help! Can you please sahre which caching method you are using for the Database Caching in the General settings? * If you are using DIsk, you should avoid it and if your server configuration and plan allows, you should use Redis or Memcached as memory-based cahcing solution for Database Caching instead of the Disk. * Thanks! * Thread Starter [traqbar](https://wordpress.org/support/users/traqbar/) * (@traqbar) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17471973) * Hello, * I recently switched to Memcache as I installed it on my server. * Thanks * Thread Starter [traqbar](https://wordpress.org/support/users/traqbar/) * (@traqbar) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17471981) * I see that there is an option to store transients in the database – is this a source of continued actions even when the plugin is disabled? * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17472028) * Hello [@traqbar](https://wordpress.org/support/users/traqbar/) * Thank you for your feedback. No, once the plugin is disabled or any module within the plugin, any sub-options for that specific module are no longer being utilized. * Thanks! * Thread Starter [traqbar](https://wordpress.org/support/users/traqbar/) * (@traqbar) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17472463) * Okay, thanks for the info. I think that corresponds to my investigations. * Can you let me know how to manually remove the current cache as it does not work when I purge all. * Can you confirm if there is an issue with clearing the database caching? * Thanks. * Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/) * (@vmarko) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17473147) * Hello [@traqbar](https://wordpress.org/support/users/traqbar/) * Thank you for your feedback. There is no issue with clearing the DB cache. From what I see, the issue is with the Action_Scheduler Are you using the Action Scheduler plugin? * If so, can you please disable this plugin and see if the problem persists? * Thanks! * Thread Starter [traqbar](https://wordpress.org/support/users/traqbar/) * (@traqbar) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17473379) * Hello, * The Action Scheduler has been removed, but it does not remove its tables on deletion. I removed them manually but then I had these errors happen. * Is this actually Action Scheduler still trying to run even though I have uninstalled it? * Thanks * Thread Starter [traqbar](https://wordpress.org/support/users/traqbar/) * (@traqbar) * [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17473422) * Right, I see, Okay I have to contact them at Automatic for how to get rid of this plugin. * Thanks Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Not cleariing database cache’ is closed to new replies. * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806) * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/) * [Frequently Asked Questions](https://wordpress.org/plugins/w3-total-cache/#faq) * [Support Threads](https://wordpress.org/support/plugin/w3-total-cache/) * [Active Topics](https://wordpress.org/support/plugin/w3-total-cache/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/w3-total-cache/unresolved/) * [Reviews](https://wordpress.org/support/plugin/w3-total-cache/reviews/) * 8 replies * 2 participants * Last reply from: [traqbar](https://wordpress.org/support/users/traqbar/) * Last activity: [2 years, 3 months ago](https://wordpress.org/support/topic/not-cleariing-database-cache/#post-17473422) * Status: resolved