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)? -- Gregory Stark EnterpriseDB http://www.enterprisedb.com
