"P. A. Bagyenda" <bagyenda@dsmagic.com> writes:
> My hard disk partition with the postgres data directory got full. I
> tried to shut down postgres so I could clear some space, nothing
> happened. So I did a reboot. On restart (after clearing some
> pg_sorttemp.XX files), I discovered that all my tables appear empty!
Were you foolish enough to remove pg_log as well? If so, all your
past transactions now appear uncommitted ...
Bryan White had this same problem awhile ago --- see
http://www.arcamax.com/pg_check/ for the tool he developed.
Bear in mind though that you cannot get back a consistent state
of the database, because the info about which transactions committed
and which didn't is gone. If you have a somewhat recent backup, it's
probably better to revert to that.
regards, tom lane