Rich Shepard <rshepard(at)appl-ecosys(dot)com> writes:
> On Fri, 30 Sep 2016, Tom Lane wrote:
>> Wrong permissions on /dev/shm, perhaps?
> Yes. I keep forgetting about this since I don't reboot this
> server/workstation often.
You ought to do some investigation and figure out what is causing
it to come up with the wrong permissions in the first place; that
is certainly not normal Linux behavior.
Or at least stick a chmod into /etc/rc.d/rc.local, if you just
want to hit the problem over the head with a hammer.
regards, tom lane