eside on the same host. In this situation, port numbers for one instance must be modified because both instances share the same configuration.</p>
<p>The port numbers of an instance are stored as Java system properties. These properties are passed to the Java application launcher through the <code>-D</code> option of the Java application launcher whenGlassFish Server is started.</p>
<ol>
<li>
<p>In the navigation tree, expand the Clusters node.</p>
</li>
<li>
<p>Under the expanded Clusters node, select the 