Hi Gerd, i just tried it once again using splitter-r231. This is the error, that occurs: 23.000.000 ways processed... id=175802045 24.000.000 ways processed... id=184296766 Stats for MultiTileProcessor pass 2 endMap Pass2 end SparseBitSet problemRels 173576 (917000 bytes) SparseBitSet neededWays 11057443 (42951840 bytes) SparseBitSet neededNodes 73769812 (212038560 bytes) Number of stored relations: 173576 starting to collect coordinates for 73.769.812 special nodes Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at it.unimi.dsi.fastutil.longs.LongArrayList.<init>(LongArrayList.java:104) at uk.me.parabola.splitter.MultiTileProcessor.endMap(MultiTileProcessor.java:194) at uk.me.parabola.splitter.Main.processMap(Main.java:603) at uk.me.parabola.splitter.Main.writeAreas(Main.java:499) at uk.me.parabola.splitter.Main.split(Main.java:218) at uk.me.parabola.splitter.Main.start(Main.java:144) at uk.me.parabola.splitter.Main.main(Main.java:133) ------------------------------------------------------------------------------------------------------------- Additionally i compared the two problem-candidates-lists: Using my own germany+iceland-dataset the list has a size of 2663KB. In case of the germany+-dataset the list size is 179797KB (!!) :O I think, this explains why there is not enough memory available... ;) Kind regards, Uli