Gregory Stark wrote:
> "Robert Haas" <robertmhaas@gmail.com> writes:
> An old page which never goes away. New page formats are introduced for a
> reason -- to support new features. An old page lying around indefinitely means
> some pages can't support those new features. Just as an example, DBAs may be
> surprised to find out that large swathes of their database are still not
> protected by CRC checksums months or years after having upgraded to 8.4 (or
> even 8.5 or 8.6 or ...). They would certainly want a way to ensure all their
> data is upgraded.
Then provide a manual mechanism to convert all pages?
Joshua D. Drake
