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Dissolve issues with very large merged landcover dataset

Question asked by joeswall on Jul 18, 2016
Latest reply on Jul 18, 2016 by cdspatial

I have taken a large mosaic land cover dataset for the James River Watershed and manipulated it through iterate, clip, and raster to polygon then merging all the resulting shapefiles into a file geodatabase. The resulting merged file is quite large, 8GB and 22 million features. I tried to run the dissolve with ArcMap 10.4.1 but received invalid topology or topoengine errors, sometimes with (out of memory), even though I am running a pc with 12GB RAM. I am trying to run it on ArcGIS Pro since that automatically utilizes my computers 64-bit geoprocessing capability and it worked well for a while, getting up to 87% in about 12 hours but it has been stuck at 87 for the past 8 hours. I really do not want to cancel and have all this time wasted. Any recommendations?