On Sun, Nov 06, 2022 at 09:13:08AM -0500, Tom Lane wrote: > > | 2022-11-06 11:52:36.367 CET [2098-35] LOG: server process (PID 2964738) was terminated by signal 11: Segmentation fault > contrib/amcheck might help to identify the faulty data (at this > point there's reason to fear multiple corruptions ...). If you're > running v14 or v15 there's a frontend for that called pg_amcheck. I am using v13, but well: | # create extension amcheck; | # select oid, relname from pg_class where relname ='faultytablename_pkey'; | [returns oid 537203] | # select bt_index_check(537203, true); | server closed the connection unexpectedly | This probably means the server terminated abnormally | before or while processing the request. | The connection to the server was lost. Attempting reset: Failed. This seems to be quite fucked up ("how" would be a good question, too, but for the moment priority is to work around the problem). If I have to delete 1k records in this table, I'll do and survive, but first I have to find out which ones. Bye, Stefan