Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au> writes:
> Will we now have to be careful to NEVER re-use OIDs in the system catalogs.
No. The proposed pg_upgrade procedure doesn't try to reproduce OIDs of
catalog entries (other than toast-table OIDs, which are never
preassigned anyway), so there's no issue.
Good point though --- thanks for thinking about it.
regards, tom lane