On Tue, Nov 22, 2005 at 09:33:34PM +0200, Andrus wrote: > Jim, > > > Upsizes? Are you adding more data? If so then yes, analyze would be > > good, though autovacuum should handle it for you. > > I create new Postgres database, upsize a lot of data into it. After that FWIW, people generally refer to that as 'loading data'; I've never heard of 'upsizing' before, which is why I was somewhat confused. > this database goes online and will receive a lot of transactions daily. > I'm using PG 8.1 default postgres.conf file. Well, by default autovacuum is turned off. Aside from that there's other things you'll want to tune. Take a look at the annotated postgresql.conf that's in techdocs. > I read than autovacuum may skip some tables which can cause wrong guru > hints. > > So it seems that I should run manually VACUUM ANALYZE for the whole database > once for initial statistics colection of those tables, isn't it? No real need to vacuum, just running analyze on the entire database would suffice. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
