title: Oracle sql developer connection - Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection
body: <p>I download oracle sql developer "Windows 64-bit with JDK 8 included" from oracle website /download section. I unzipped it and tried to make a connection. I tried couple of options but I am getting "Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection" error.</p>
  
  <p>Can any one help me with this. Thank you</p>