Gregory Stark wrote: > Tom Lane <tgl@xxxxxxxxxxxxx> writes: > > > Matteo Sgalaberni <sgala@xxxxxxxxx> writes: > > > Good to know this...but why this behaviour? it'is lovely...:) > > > > Open transactions are tracked across the whole cluster. This is > > necessary when vacuuming shared catalogs. In principle we could > > track per-database xmin values as well, but the distributed overhead > > that'd be added to *every* GetSnapshotData call is a bit worrisome. > > Don't we do that now in CVS (ie, in 8.2)? No, we don't. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.
