Re: Alternative for vacuuming queue-like tables - Mailing list pgsql-general

From Vivek Khera
Subject Re: Alternative for vacuuming queue-like tables
Date
Msg-id 7CCF1DD9-E7CE-495A-BA7E-74EC89A9BAA5@khera.org
Whole thread Raw
In response to Re: Alternative for vacuuming queue-like tables  (Csaba Nagy <nagy@ecircle-ag.com>)
List pgsql-general
On Apr 28, 2006, at 9:32 AM, Csaba Nagy wrote:

> I'm not sure how this operation can work in the presence of other long
> running transactions which did not touch the queue table yet, but it
> actually does work, I can confirm that. Is it violating MVCC maybe ?

It sounds like it does potentially violate mvcc, but I haven't
thought hard about it.  It  also has the advantage that it rebuilds
your indexes during the clustering.

And a convenient feature is that you just define those CLUSTER
statements once, then whenever you need it, just run "CLUSTER;" all
by itself and all tables previously defined as clustered will be re-
clustered on the specified index.


pgsql-general by date:

Previous
From: Tom Lane
Date:
Subject: Re: Installing PostgreSQL on Win 2003 R2 64-bit
Next
From: Volker Aßmann
Date:
Subject: Postmaster process on port 10000