Steve T <steve(at)retsol(dot)co(dot)uk> writes:
> If I have a set of large objects and I have a pointer on a table to that
> object, what happens to that pointer when the database is dumped and
> restored?
Nothing, if you're using a reasonably modern PG version (8.1 or later).
pg_dump preserves the OIDs of large objects.
In older versions dump/reload didn't preserve those OIDs, but instead
pg_dump attempted to update stored OIDs to match the new values.
regards, tom lane