Re: 9.6.11- could not truncate directory "pg_serial": apparent wraparound

>
> On Sun, Apr 7, 2019 at 2:31 AM Pavel Suderevsky <psuderevsky(at)gmail(dot)com>
> wrote:
> > Probably if you advise me what could cause "pg_serial": apparent
> wraparound messages I would have more chances to handle all the performance
> issues.
>
> Did you see that warning at some point before the later error?
>
Thomas,

Thank you for your reply!

No, there have never been such warnings.

I wonder if this condition required you to have a serializable
> transaction running (or prepared) while you consume 2^30 AKA ~1
> billion xids. I think it is unreachable in v11+ because commit
> e5eb4fa8 allowed for more SLRU pages to avoid this artificially early
> wrap.

Do I understand right that this is about Virtual txids? Have no idea how
even a something close to a billion of transaction ids could be consumed on
this system.

--
Pavel Suderevsky
E: psuderevsky(at)gmail(dot)com