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Error 99999 using Clip/Intersect on huge polygon datasets

Question asked by martinscheiber on Apr 12, 2012
Latest reply on Dec 13, 2013 by khartling-esristaff
Hello everybody,

I´m trying to clip/intersect two huge polygon datasets (500.000 and around 3.500.000 Polygons).
Every time the geoprocess ends with the following error message:

ERROR 999999: Error executing function. Invalid Topology [Topoengine error.] Failed to execute (Clip).

I tried "Repair Geometry" and there are no errors anymore, but it still doesn´t work.

I´m using ArcGIS 10.0 on Windows 7, 64 Bit, 4 Gb RAM. Both files are in File Geodatabases.
Any help would be highly appreciated.