title: ORA-30683: failure establishing connection to debugger
body: <p>I want to debug a Procedure on oracle &quot;SQL Developer &quot;  Version 17.4.1.054. I am unable to do this as I get the following errors:</p>
  <blockquote>
  <p>ORA-30683: failure establishing connection to debugger</p>
  <p>ORA-12535: TNS:operation timed out</p>
  <p>ORA-06512: at &quot;SYS.DBMS_DEBUG_JDWP&quot;, line 68</p>
  <p>ORA-06512: at line 1</p>
  </blockquote>
  <p>I did this setting in &quot;SQL Developer&quot; go to <code>'Tools' -&gt; 'Preferences' -&gt; 'Debugger'</code> and then Clicked the option for 'Prompt for debugger host for database debugging'.</p>
  <p>But still getting the same error message.</p>