Marcin Giedz <marcin(dot)giedz(at)eulerhermes(dot)pl> writes:
> Why I still have "out of memory" despite of changing not
> overcommit_memory?
Because the 2.6.10 kernel is buggy :-( See this thread:
http://archives.postgresql.org/pgsql-general/2005-04/msg00342.php
regards, tom lane