Hi Nicolas, On Wed, Jul 7, 2010 at 10:47 AM, JOUANIN Nicolas (44) <nicolas.joua...@dgfip.finances.gouv.fr> wrote: > There were no modification made on the database except a restart yesterday > evening and a vacuumdb --analyse ran at night.
It's not really surprising considering you probably kept the default_statistics_target to 10 (it's the default in 8.3). Consider raising it to 100 in your postgresql.conf (100 is the default for newer versions), then reload, and run a new ANALYZE. You might need to set it higher on specific columns if you have a lot of data and your data distribution is weird. And, btw, please upgrade to the latest 8.3.x. HTH -- Guillaume -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
