Re: tcp settings

> On Sep 20, 2022, at 10:03 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> Rob Sargent <robjsargent(at)gmail(dot)com> writes:
>>> then keepalives aren't necessarily the solution anyway. When is
>>> this failure occurring ... is it while trying to establish the
>>> database connection in the first place? Or does it only happen
>>> if you've left the psql session sit idle for a long while?
>
>> Sitting idle for not even a long while. Under half hour I feel would do it. But I don’t think it times out while I’m “SQLing”
>
> OK, that does sound like something that reducing the keepalive
> interval could help with. The traditional keepalive timeout
> is a couple of hours, at least on my Linux box:
>
> $ cat /proc/sys/net/ipv4/tcp_keepalive_time
> 7200
>
> but it sounds like there's something between you and the database
> server that will forget connections a lot quicker than that.
>
> regards, tom lane

I was afraid you would conclude that. But its just plain ol’ psql (inside emacs) on interactive node directly to db server node, all in a “protected environment”. There could be network pieces in the middle that are getting uppity. I’ll ask /them/.

Thanks