title: What does the "IO Error: Socket read timed out" means (SQL developer)
body: <p>When I try to open SQL developer then I am getting this error: </p>
  
  <pre><code>An error was encountered performing the requested operation:
  IO Error: Socket read timed out
  The Network Adapter could not establish the connection Vendor code 17002
  </code></pre>
  
  <p>What is the problem?</p>