title: Increasing the heap size on Eclipse-RAD
body: <p>I'm trying to increase the heap size on my RAD installation. When I make the changes, Eclipse isn't starting.</p>
  
  <p>Current configuration...</p>
  
  <pre><code>-startup
  plugins\org.eclipse.equinox.launcher_1.0.101.R34x_v20081125.jar
  -install
  C:\Program Files\IBM\SDP
  --launcher.library
  plugins\org.eclipse.equinox.launcher.win32.win32.x86_1.0.101.R34x_v20080731
  -vm
  jdk\jre\bin\j9vm\jvm.dll
  -vmargs
  -Xquickstart
  -Xms128m
  -Xmx1024m
  -Xmnx64m
  -Xgcpolicy:gencon
  -Xscmx96m
  -Xshareclasses:name=IBMSDP_%u
  -Xnolinenumbers
  -XX:MaxPermSize=128M
  -Dcom.ibm.ws.management.event.max_polling_interval=1000
  </code></pre>
  
  <p>I have changed startup to 256m and max to 1536m. With that change, Eclipse won't even start and I get this error..<img src="https://i.stack.imgur.com/zLfv1.jpg" alt="Eclipse startup error"></p>
  
  <p>Can someone explain what this means and how I can properly increase the memory? Thanks!</p>