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Message: <blockquote data-quote="Sledmore" data-source="post: 467075" data-attributes="member: 591">Like the others, I think it could be the cron.By connections do you mean threads? For MySQL active connections come up under 'Threads connected' rather than 'Connections', it might be worth monitoring the active threads, you can view these by running the processlist query.[CODE=sql]SHOW PROCESSLIST;[/CODE]It'd be worth running this when/if you experience this again. We recently had an issue w/ an e-learning site where for some unknown reason WooCommerce had started to run an alter query, but due to how long it took and timeouts it tried again, and again, and again and so on, thus bringing the site down - which I believe was trigged by the cron.</blockquote>