Scott Whitney <scott@xxxxxxxxxxx> writes: > It looks like maybe your semaphores are getting deleted out from under PG as a guess. Yeah. See https://www.postgresql.org/docs/devel/static/kernel-resources.html#systemd-removeipc (Probably we should back-patch that section into older versions of the docs, as it's not at all PG-version-specific.) regards, tom lane -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin