On Sun, Apr 14, 2019 at 4:51 PM Gunther <r...@gusw.net> wrote: > For weeks now, I am banging my head at an "out of memory" situation. There > is only one query I am running on an 8 GB system, whatever I try, I get > knocked out on this out of memory. > Is PostgreSQL throwing an error with OOM, or is getting killed -9 by the OOM killer? Do you get a core file you can inspect with gdb?
You might want to see the query, but it is a huge plan, and I can't really > break this down. It shouldn't matter though. But just so you can get a > glimpse here is the plan: > > Insert on businessoperation (cost=5358849.28..5361878.44 rows=34619 > width=1197) > -> Unique (cost=5358849.28..5361532.25 rows=34619 width=1197) > > > Maybe it is memory for trigger or constraint checking, although I don't know why that would appear instantly. What triggers or constraints do you have on businessoperation? What if you just run the SELECT without the INSERT? Or insert into a temp table rather than into businessoperation? And if that doesn't crash, what if you then insert to businessoperation from the temp table? Also, what version? Cheers, Jeff
