title: How can i solve this issue through Sql Developer with Oracle
body: <p><a href="https://i.stack.imgur.com/obb9G.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/obb9G.png" alt="enter image description here" /></a></p>
  <p>Status : Failure -Test failed: Listener refused the connection with the following error:
  ORA-12518, TNS: listener could not hand off client connection</p>