Moin, I have to improve the performance from PostGis: LK Gifhorn takes 19 seconds in ArcGis and 6 Minutes with PostGis. The intersection InVeKos with Atkis all over lower saxony (niedersachsen) runs since 14 hours now!!! That is overkill. Does someone know how to make PostGis faster in GIS functions? have a nice day Andreas Laggner