title: There is no 'app\oracle\products\...' folder in C drive
body: <p>I have downloaded Oracle SQL developer. When I try to create a new connection, it shows error as </p>
  
  <blockquote>
    <p>Status : Failure -Test failed: IO Error: The Network Adapter could not establish the connection. </p>
  </blockquote>
  
  <p>I tried default usernames and passwords such as <code>SYS</code>, <code>SYSTEM</code> and <code>hr</code>. But none of them worked. I tried setting all the environment variables properly. I tried to login through sqlplus. Nothing worked. Searched in system services, no services are present with name <code>oracle</code> or <code>oracle services</code>. </p>
  
  <p>There is no folder named <code>app</code> in C drive to set <code>ORACLE_PATH</code> or <code>ORACLE_HOME</code>. There is no path such as <code>c:\app\oracle\product...</code>. I have searched for <code>oracle\product\...</code> folder in other directories also. But I could not find any such folders. </p>
  
  <p>Am I missing anything?</p>