title: How to Lower Heap Size of WebSphere Server
body: <p>I tried to change the Heap Size of my local WebSphere Server instance to 2G using the "Run Administrative Console" function in RAD but apparently, that was too big of a number. Now, I can't start the server anymore and I get this error:</p>
  
  <pre><code>JVMJ9VM015W Initialization error for library j9gc23(2): Failed to instantiate heap.  2G requested
  Could not create the Java virtual machine.
  </code></pre>
  
  <p>I can't just change it back to a lower number because I can't seem to use the "Run Admin Console" function without starting the server first so I was wondering if anyone knew where the config file is kept for this? How can fix this problem?</p>