How to configure Heap size in Web sphere app server

We can change WAS heap size in two ways
1. GUI
2. Command Prompt

GUI:

To set the JVM heap size:

1. Start the WebSphere Application Server administrative console.
2. Navigate to Servers > Application servers > server1 > Java and Process Management > Process Definition > Java Virtual Machine. server1 is the name of the server where you are deploying InfoSphere™ Master Content.
3.Set the initial and maximum heap sizes:

                   Initial Heap Size:
            Maximum Heap Size:
  Note: By default these values are in MB

Non GUI:


1. Navi gate to IBM_HOME\WebSphere\AppServer\profiles\AppSrv01\config\cells\server.xml

2. Then look for the “jvmEntries” xml element that could look like this:

<jvmEntries xmi:id=”JavaVirtualMachine_1183122130078″ verboseModeClass=”false” verboseModeGarbageCollection=”false” verboseModeJNI=”false” initialHeapSize=”512″ runHProf=”false” debugMode=”false” debugArgs=”-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=7777″ disableJIT=”false”>
3. Change the initialHeapSize and maximumHeapSize