Sharmad Naik <sharmad@goatelecom.com> writes:
> When I gave a search for core file I didn't seems to
> exist.pg_dump didnot create the core file
pg_dump isn't coring, it's the backend. Backend core files normally
appear in $PGDATA/base/whicheverdb/. If you don't see one there,
it's likely because you started the postmaster under "ulimit -c 0"
(this seems to be the default for init-script-started processes on
at least some Linux distros :-(). Restart it with "ulimit -c unlimited"
and try again.
regards, tom lane