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<h1>Service Registration</h1>
<p>A feature by which instances and dispatchers automatically register information with a listener. Because this information is registered with the listener, the <a href="n8ahelplistenerora_file.htm">listener.ora file</a> does not need to be configured with this static information.</p>
<p>During database startup, service registration provides the listener with information about:</p>
<ul>
<li>
<p>Service names for each running instance of the database</p>
</li>
<li>
<p>Instance names of the database</p>
</li>
<li>
<p>Service handlers (dispatchers and dedicated servers) available for each instance</p>
</li>
<li>
<p>Dispatcher, instance, and node load information</p>
</li>
</ul>
<p>These enable the listener to direct a client request appropriately.</p>
<p>This load information enables the listener to determine which dispatcher can best handle a client connection request. If all dispatchers are blocked, the listener can spawn a dedicated server for the connection.</p>
<p><span class="bold">Related Topics</span></p>
<p><a href="n8ahelpnet8_overview.htm">Oracle Net Services Overview</a></p>
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