Re: [PERFORM] DB Performance decreases due to often written/accessed table

2006-10-19 Thread Merlin Moncure
On 10/19/06, Jens Schipkowski <[EMAIL PROTECTED]> wrote: On Thu, 19 Oct 2006 19:32:22 +0200, Merlin Moncure > > 1. your database design is the real culprit here. If you want things > to run really quickly, solve the problem there by normalizing your > schema. denomalization is the root cause of

Re: [PERFORM] DB Performance decreases due to often written/accessed table

2006-10-19 Thread Jens Schipkowski
On Thu, 19 Oct 2006 19:32:22 +0200, Merlin Moncure <[EMAIL PROTECTED]> wrote: On 10/19/06, Jens Schipkowski <[EMAIL PROTECTED]> wrote: // select finds out which one has not an twin // a twin is defined as record with the same attr* values // decreases speed over time until timeout by postgres

Re: [PERFORM] DB Performance decreases due to often written/accessed table

2006-10-19 Thread Merlin Moncure
On 10/19/06, Jens Schipkowski <[EMAIL PROTECTED]> wrote: // select finds out which one has not an twin // a twin is defined as record with the same attr* values // decreases speed over time until timeout by postgresql SELECT * FROM tbl_reg reg WHERE register <> loc1 AND idreg NOT IN

Re: [PERFORM] DB Performance decreases due to often written/accessed table

2006-10-19 Thread Jens Schipkowski
On Thu, 19 Oct 2006 16:55:34 +0200, Richard Huxton wrote: Jens Schipkowski wrote: Hi, we've got performance problems due to repeating SELECT, UPDATE, DELETE, INSERT statements. This statements have to be executed every 10 seconds, but they run into a timeout. To obviate problems regardi