On 9/11/07, Pavan Deolasee <pavan.deolasee@gmail.com> wrote:
- Track the minimum xmin in the page header to avoid repeated
(wasted) attempts to prune a Prunable page in the presence of long running
transactions.
I would actually think twice before even doing this because this would lead to
complete change in heap page structure and stop people from upgrading
to 8.3 without a complete dump/restore. I don't remember 8.3 introduces any other
significant change which already enforces that.
Thanks,
Pavan
--
Pavan Deolasee
EnterpriseDB
http://www.enterprisedb.com