On Thu, Jun 07, 2007 at 04:22:47PM +0200, Gunther Mayer wrote: > There are a whole bunch of update queries that fire all the time but > afaik none of them ever lock the entire table. To the best of my > knowledge UPDATE ... WHERE ... only locks those rows that it actually > operates on, in my case this is always a single row. Well that shouldn't be biting you, then (you're not in SERIALIZABLE mode, right?). The other obvious bit would be checkpoint storms. What's your bgwriter config like? > Question is, how do I find out about locks at the time when I only get > told about the slow query *after* it has completed and postgres has told > me so by logging a slow query entry in my logs? You can't :( A -- Andrew Sullivan | ajs@xxxxxxxxxxxxxxx This work was visionary and imaginative, and goes to show that visionary and imaginative work need not end up well. --Dennis Ritchie