Re: pg_upgrade and statistics - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: pg_upgrade and statistics
Date
Msg-id 20120313185229.GA23967@momjian.us
Whole thread Raw
In response to Re: pg_upgrade and statistics  (Greg Stark <stark@mit.edu>)
List pgsql-hackers
On Tue, Mar 13, 2012 at 05:46:06PM +0000, Greg Stark wrote:
> On Tue, Mar 13, 2012 at 1:38 AM, Daniel Farina <daniel@heroku.com> wrote:
> > You probably are going to ask: "why not just run ANALYZE and be done
> > with it?"
> 
> Uhm yes. If analyze takes a long time then something is broken. It's
> only reading a sample which should be pretty much a fixed number of
> pages per table. It shouldn't take much longer on your large database
> than on your smaller databases.
> 
> Perhaps you're running vacuum analyze by mistake?

pg_upgrade recommends running this command:
vacuumdb --all --analyze-only

--  Bruce Momjian  <bruce@momjian.us>        http://momjian.us EnterpriseDB
http://enterprisedb.com
 + It's impossible for everything to be true. +


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