Horton

Re: [Fwd: Re: [PATCHES] 64-bit CommandIds]

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Hans-Juergen Schoenig <hs@cybertec.at>
Cc: Gregory Stark <stark@enterprisedb.com>, "Decibel!" <decibel@decibel.org>, "Heikki Linnakangas" <heikki@enterprisedb.com>, "Zoltan Boszormenyi" <zb@cybertec.at>, "Bruce Momjian" <bruce@momjian.us>, "PG Hackers" <pgsql-hackers@postgresql.org>
Date: 2008-03-21T14:41:11Z
Lists: pgsql-hackers 
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