Re: Database Statistics???
От
Tom Arthurs
Тема
Re: Database Statistics???
Дата
Msg-id
4697B8C7.7030304@jobflash.com
Ответ на
Database Statistics??? (smiley2211)
Список
Дерево обсуждения
Database Statistics??? smiley2211 <smiley2211@yahoo.com>
Re: Database Statistics??? Ansgar -59cobalt- Wiechers <lists@planetcobalt.net>
Re: Database Statistics??? Mario Weilguni <mweilguni@sime.com>
Re: Database Statistics??? Tom Arthurs <tarthurs@jobflash.com>
Re: Database Statistics??? smiley2211 <smiley2211@yahoo.com>
Re: Database Statistics??? Alvaro Herrera <alvherre@commandprompt.com>
smiley2211 wrote: > Hello all, > > I am a bit confused...I have a database which was performing very POORLY > selecting from a view (posted earlier) on one server but extremely fast on > another server... > > I just backed up the database from the FAST server and loaded to the SLOW > server and it ran just as fast as it originally did...my questions are: > > Are STATISTICS some how saved with the database?? if so, how do I UPDATE > view or update them? > > Should I backup the data \ drop the database and reload it to make it get > new stats?? (vacuum analyze does nothing for this poor performing database) > > Thanks-a-bunch. > You can update statistics with the analyze or vacuum analyze command, but I'd bet what you are seeing here is the effect of recreating the indices that replaying a backup does.
В списке pgsql-performance по дате отправления