How to get the min and max heap size settings of a VM from within a Java program?
maybe that could help you ?
http://download.oracle.com/docs/cd/E11035_01/wls100/perform/JVMTuning.html#wp1109778 http://javahowto.blogspot.com/2006/06/6-common-errors-in-setting-java-heap.html http://www.caucho.com/resin-3.0/performance/jvm-tuning.xtp http://blog.paulgu.com/2008/07/19/6-common-errors-in-setting-java-heap-size/