title: The difference between tnsping and telnet?
body: <p>I'm facing some concerns about tnsping &amp; telnet in Oracle. In my current understanding:</p>
  
  <ul>
  <li><p><code>telnet IP PORT</code> is used to test that you can connect to that
  machine (at IP addr) and some service is listening at that PORT.</p></li>
  <li><p><code>tnsping NET_SERVICE_NAME [COUNT]</code> is used to test that you can
  connect to that machine (at IP addr) and some service is listening at
  that PORT &amp; that service is an Oracle Listener.</p></li>
  </ul>
  
  <p>Can someone with a solid knowledge about Oracle verify or point out wrong things in my statements? It is currently hanging in my head, but I am not sure that I have a correct understanding about it.</p>