Some background: I have 2 polygon shape files with approximately 500,000 records each. The two files are identical in terms of field structure.
Using ArcGIS 10.0 I can'nt merge these two files using Geoprocessing / Merge. ArcMap allways crashes somewhere in the middle of the process.
Is there any open source software that can do this job? QGIS has the function: Vector/ Merging shape file into one , but there was a reported bug with this function in the current version 1.7. I know GDAL can do a lot of things and wonder if GDAL or some other opensource software can do this properly.