Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> Matthew Zinicola wrote:
>> 2017-03-17 12:32:20.311 UTCFATAL: XX000: semctl(16187416, 0, SETVAL, 0)
>> failed: Invalid argument
> Hmm, this looks familiar:
> https://www.postgresql.org/message-id/30943.1481076987%40sss.pgh.pa.us
If it is the systemd-kills-your-semaphores problem, downgrading to 9.5
would not fix it. The thing to be looking at is what else you changed
when moving to 9.6. Maybe you are using a different packaging, or
different way of starting the server?
regards, tom lane
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