Hans-Juergen Schoenig <hs@cybertec.at> writes:
> Doing this for XIDs is pretty useless this days.
> It is only targeted for command ids which are consumed heavily by
> stored procedure languages.
> It happens once on a while that a complex business logic procedure
> runs out of command ids inside a transaction.
> the idea is to give users a chance to avoid that.
> touching XIDs does not make sense to me at all.
In view of the fact that 8.3 greatly reduced the CommandID consumption
of typical plpgsql code
http://archives.postgresql.org/pgsql-committers/2007-11/msg00585.php
I wonder whether the case for wider CIDs hasn't likewise taken a
major hit.
regards, tom lane