On 9/22/2014 12:33 PM, Luke Coldiron wrote:
>
> It is possible and that is part of what I am trying to discover
> however I am very familiar with the system / code base and in this
> case there is a single process updating the timestamp and a single
> process reading the timestamp. There are no other user processes
> programmed to interact with this table outside of potentially what
> Postgres is doing.
ANY other connection to the same postgres server, even to a different
database, that has an open long running transaction (most frequently,
"Idle In Transaction") will block autovacuum from marking the old tuples
as reusable.
--
john r pierce 37N 122W
somewhere on the middle of the left coast