I have it with 8GB and get the same error, but with an old version of spectrum.
java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space
Exception in thread "http-bio-80-exec-20" java.lang.OutOfMemoryError: Java heap space
Nov 19, 2015 9:48:43 PM - TomcatHealthWatcher stopping: full thread dump
Nov 19 21:48:48 GMT-03:00 2015: Full thread dump
i got this when we have a network problem and all the spectrum server cannot poll any device, the spectroserver dont hangup, but oneclick did it.
how much ram have it? 512 if the conf of Java heap setting
Diego MP