<ogjunk-pgjedan@yahoo.com> writes:
> I'm using PG 7.3.4 under RedHat 9.0 and I've started noticing the
> following type of errors:
> cannot open segment 1 of relation url (target block 537329664): No
> such file or directory
If this is coming from an indexscan query, then I'd bet on the problem
being a corrupted index on the "url" table. REINDEX may get you out of
it. If not, try dumping and reloading that table (or the whole database
if need be).
7.3.4 is a bit old --- you should at least move up to 7.3.8, if not
7.4.something.
regards, tom lane