"David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> writes:
> On Mon, Apr 2, 2018 at 8:30 AM, Artem Tomyuk <admin(at)leboutique(dot)com> wrote:
>> i've noticed that during business hours autovacuum vacuum is not being
>> triggered on pg_attribute,
>> but during night time it triggered every two hours, both vacuum and
>> analyze, maybe you know why?
> Sounds like someone added a "cron job" somewhere.
... and, perhaps, explicitly disabled autovacuum on that table?
regards, tom lane