> > On Sun, Apr 7, 2019 at 2:31 AM Pavel Suderevsky <psuderev...@gmail.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: psuderev...@gmail.com
