Re: select * and save into a text file failed

"Lee Wu" <Lwu@mxlogic.com> writes:
> either
> 1. out of memory for query result
> 2. killed
> 3. crash PG

Cases 2 and 3 represent the kernel out-of-memory code going nuts.
Google for "OOM kill" and "memory overcommit".  IMHO you never
want Linux's default memory overcommit behavior on a production
server.

            regards, tom lane