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. Thanks, Pavan -- Pavan Deolasee EnterpriseDB http://www.enterprisedb.com
