DSXchange

I'd say your project is too big and the JVM ran out out of memory trying to import it all.

Either split it up and do it in a couple of blocks, or there may be a way to increase the size of the JVM. I once came across an article to get around the same sort of thing when you tried to use IAAdmin -getOutputTable and there was too much data. Maybe it will help.

You can increase the size of memory available to the JVM. I don't have details at the moment, but if you search for Xmx you'll be well on the way.