In response to Ranieri Mazili <ranieri.oliveira@xxxxxxxxxxxx>: > > I'm developing a BI and as database it's using postgresql 8.2, how data > are very detailed, I'm creating a view to consolidate the most important > data, but the performance of view is very poor, 1 minute to perform more > or less without where clause. > I need to know how I can increase the performance, if exist some option > to do cache, because the view will change only one time per day. > My configuration is default, without modifications after install. > I'm using windows 2003 server with a dell server with 4GB of memory. Standard tuning advice would apply, as well as the advice not to cross- post. Also boilerplate advice that we can't really help much without more detail. Good places to start with tuning: http://www.powerpostgresql.com/PerfList http://www.varlena.com/GeneralBits/Tidbits/perf.html However, if the data only changes once a day, you may be better of materializing the data, instead of using a view. Run a cron job once a day that does your big query and stores the data in another table vi SELECT INTO might be better for you than a view. > To create the view, I created some functions, and then perform they on > one select like: > select A.field1, B.field2, ... from function_A() A, function_B() B... > Is this the best way to do it? > > I appreciate any help. > > Thanks > > > ---------------------------(end of broadcast)--------------------------- > TIP 2: Don't 'kill -9' the postmaster -- Bill Moran http://www.potentialtech.com ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
