There was not enough memory available to process the operation. Certain operations generate internal tables, called hash tables, to perform the calculations necessary to create the output. With large or complicated inputs, these hash tables can get larger than the available memory on the system, causing an error condition. Note also that running many applications simultaneously on a system will reduce the amount of memory available to ArcGIS.
Following are some options to consider:
- Close unneeded applications to free up system memory.
- Configure more swap space by changing the virtual memory setting.
- There is a limit to the number of unique values that are possible in an ESRI Grid raster. If you have a grid that approaches this limit (approximately 2.1 billion unique values), clip it into smaller pieces and process each separately. Then merge the results into a final output with Mosaic.