| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, Andres Freund <andres(at)anarazel(dot)de>, Adam Brusselback <adambrusselback(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Discussion on missing optimizations |
| Date: | 2017-10-12 14:06:44 |
| Message-ID: | CA+TgmoYHp43_GiTnszQfCoF1uqM7buqDVrA8anhoaK87dJiSBg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Oct 12, 2017 at 10:00 AM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> From my experience with Oracle I would say that that is a can of worms.
>
> Yeah, I'm pretty suspicious of the idea too. We've had an awful lot of
> bad experience with local plan caching, to the point where people wonder
> why we don't just auto-replan every time. How would a shared cache
> make that better? (Even assuming it was otherwise free, which it
> surely won't be.)
Obviously it wouldn't. But it might make other things better.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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