title: Unrecognized VM option '+HeapDumpOnCtrlBreak'
body: <p>I'm using Jboss and I added <code>-XX:+HeapDumpOnCtrlBreak</code> option to JAVA_OPTS.
  But I got the error when starting Jboss:</p>
  
  <pre><code>Unrecognized VM option '+HeapDumpOnCtrlBreak'
  Could not create the Java virtual machine.
  </code></pre>
  
  <p>I've searched on the net and it seems JDK 6 doesn't support this option so I changed to jdk1.5.0_09 but still got this error.</p>
  
  <p>Does anyone know what's wrong?</p>