Joel Burton <jburton(at)scw(dot)org> writes:
>> and I could find a $PGDATA/base/18720/16567 file.
>> Could you find such a file ?
> No. I do have the db directory, and all of the other file for the existing
> classes, but not this.
Hm. You could make an empty file by that name (just 'touch' it) and
then you'd probably be able to dump (possibly after reindexing
pg_inherit's indexes again). pg_inherits isn't a real critical table,
fortunately.
> Any ideas why this would disappear?
Interesting question, all right. Did you have a system crash?
regards, tom lane