I have a large, convoluted polygon file in SDE. I have it broken up in order to have faster refresh within mxd's, but I need to be able to merge all of the polygons together for the final product. The merge command keeps failing, as does dissolve or any other tool I try to use. I have more success in a shapefile, and am able to merge small area together at a time, but as I get close to having everything merged together, everything I try fails. Has anyone been able to successfully do this kind of task?