On 9/10/07, Florian Pflug <[EMAIL PROTECTED]> wrote:
> Maybe that risk could be lowered if instead of a flag, we stored the
> minimal global xmin needed to prune at least one tuple.

I like the idea. The question is whether the chances of a Prunable
page being looked up again and again in presence of a long
running transaction are high enough to justify adding 4 bytes
to page header.


Pavan Deolasee
EnterpriseDB     http://www.enterprisedb.com

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