Hello, I have a pretty big database with about 200 000 rows. This is the main table. Also some other tables with FKs to this main table. I have to calculate some numbers for each entry at a certain amount of time and update the DB. I've noticed the update TAKES a very long time. For example i have a second table which has 3 columns: 1) the FK to the main big table 2) number 1 3) number 2 After the calculation is done i execute many update table2 set number1=%d, number2=%d. It takes quite a lot of time. Any clue of how can i improve this time ? I did some tests with other engines. Eg: Mysql (no FKs) - aprox 10 times faster SQLite - aprox 5 time faster I tryed to set fsync = false but no luck either. It still takes quite a lot of time. I can share the complete test results if somebody is interested. Thanks for your help ! p.s.: postgresql-7.4.7 is the version i have ! -- Catalin Constantin Bounce Software http://www.bounce-software.com http://www.cabanova.ro ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to majordomo@xxxxxxxxxxxxxx)