chenhj <chjischj(at)163(dot)com> writes:
> In my test(PG9.3.4), i found when update a parent table which has a large number of child tables, the execute plan will consume lots of memory. And possibly cause OOM.
See
file:///net/sss1/home/postgres/pgsql/doc/src/sgml/html/ddl-partitioning.html#DDL-PARTITIONING-CAVEATS
particularly the last paragraph.
regards, tom lane