Re: Performance issue after migration from 9.4 to 15 - Mailing list pgsql-general

From Adrian Klaver
Subject Re: Performance issue after migration from 9.4 to 15
Date
Msg-id 813fb203-bf02-3f2b-b4c0-cdcfd5de86c9@aklaver.com
Whole thread Raw
In response to RE: Performance issue after migration from 9.4 to 15  (Christian Schröder <Christian.Schroeder@solvians.com>)
List pgsql-general
On 4/11/23 07:41, Christian Schröder wrote:
> Hi all,
> Thanks for all your tips!
> I have meanwhile run "ANALYZE" on all tables. Either that was as important as everybody tells me 😉 or it is just a
coincidence(e.g., fewer other queries on the database). 
 

It is:

https://www.postgresql.org/docs/current/pgupgrade.html


Statistics

Because optimizer statistics are not transferred by pg_upgrade, you will 
be instructed to run a command to regenerate that information at the end 
of the upgrade. You might need to set connection parameters to match 
your new cluster.




-- 
Adrian Klaver
adrian.klaver@aklaver.com




pgsql-general by date:

Previous
From: Joe Carlson
Date:
Subject: Re: TEXT column > 1Gb
Next
From: Adrian Klaver
Date:
Subject: Re: FW: Error!