I just had an OutOfMemoryError on one of our deployments. I then ran jmap, to do a heap dump, and looked at the resulting java.hprof binary file using IBM's HeapAnalyzer(1), and jhat.
What I found, was a WeakHashMap inside dbcp, that contained 346000 WeakHashMap$Entry objects, taking up 125M of memory, out of 193M total heap. These Entry objects contain Transaction instances, not Connections. Has anyone ran into something similiar? This is against ofbiz version 595296. ps: I'm currently running the ofbiz test cases in this ofbiz version on an 8-way machine, with 8G of ram, underneath hprof, trying to track this down. 1: http://www.alphaworks.ibm.com/tech/heapanalyzer
