On Thu, 2021-09-02 at 12:10 +0300, Alexander Kass wrote: > As for xmin usage, we have a working scheme. We fetch objects based on > dbage(xid), starting from the oldest uncommitted transaction of > previous synchronization. > Do you think it does not work? I don't know what exactly you are doing, so I cannot be certain. age(xmin) will not necessarily tell you how many transactions ago the row was created... Yours, Laurenz Albe -- Cybertec | https://www.cybertec-postgresql.com