Change Tomcat HeapSize(JVM Heap) in Eclipse

Recently I've deployed same WAR to Tomcat server on two machines A and B. On machine A everything works well, but on machine B there are error messages: "java.lang.OutOfMemoryError: Java heap space"

I try to reduce Java heap size on machine A to see if same symptom can be reproduce. After change InitialHeapSize and MaxHeapSize to 128MB, I finally can reproduce same issue on machine A.

I am using Tomcat 7 + Eclipse on machine A, here are some references about how to change the heap size using Eclipse:
http://www.mkyong.com/eclipse/eclipse-tomcat-java-lang-outofmemoryerror-java-heap-space/
http://crunchify.com/how-to-increase-tomcat-heapsize-jvm-heap-in-eclipse-ede/

Important parameters:
-Xms<size> - Set initial Java heap size
-Xmx<size> - Set maximum Java heap size
-Xss<size> - Set java thread stack size


Add new Tomcat server arguments in Eclipse on Machine A:
[-XX:+PrintFlagsFinal]
    uintx InitialHeapSize                          := 262228096       {product}           [250MB]
    uintx MaxHeapSize                              := 4196401152      {product}           [4002MB]
     intx ThreadStackSize                           = 1024            {pd product}      
(means the original MaxHeapSize is about 4002MB)

[-Xms512m -Xmx1024m -XX:+PrintFlagsFinal]
    uintx InitialHeapSize                          := 536870912       {product}           [512MB]
    uintx MaxHeapSize                              := 1073741824      {product}           [1024MB]
     intx ThreadStackSize                           = 1024            {pd product}      

[-Xms128m -Xmx128m -XX:+PrintFlagsFinal]
    uintx InitialHeapSize                          := 134217728       {product}           [128MB]
    uintx MaxHeapSize                              := 134217728       {product}           [128MB]
     intx ThreadStackSize                           = 1024            {pd product}