There is an application A doing some things in a database. In the middle of the program, application B is called which does some other things. Now for some reason application B hangs for certain inputs and I have to find out the reason for this. The sequence is: | A: BEGIN | A: [does some things] | A: [calls B] | | B: BEGIN | B: [does some things] | B: update bmeproduct set manufacturerpid='40913', leadtime='1' where idproduct=9681 | B: [waits forever] When I look at pg_stat_activity, I can see the update statement with "waiting == 't'" for process B, which would not change for at least several hours. And I can see "<IDLE> in transaction" for process A which, of course, I know by the nature of the program. However, to eliminate the problem I would need the actual source of the lock. Program A does not ever touch the table "bmeproduct" (it does only things in a completely different part of the database - or at least: it _should_ do), so the lock must be introduces via some foreign key. But: is there any chance to find out WHICH table (or even record) is the cause of the trouble? This would be so helpful... Stefan -- Grenzenlos bleibt grenzenlos: Trotz Stefan! http://www.sloganizer.de/ -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general