"Raymond O'Donnell" <rod(at)iol(dot)ie> writes:
> When I try to run pg_dump on any of my databases, I get the
> following error:
> getInherits(): SELECT failed. Explanation returned from backend:
> 'ERROR: attribute 'inhrel' not found'.
IIRC, this is the symptom of using a pre-7.0 pg_dump with a 7.0 backend;
more recent pg_dump versions warn you if they see a server version
mismatch.
regards, tom lane