title: Exception: ORA-31640: unable to open dump file "..." for read
body: <p>When I am trying to import .DMP file via SQL developer I am getting this error </p>
  
  <pre><code>Exception: ORA-31640: unable to open dump file "/home/oracle/Desktop/dump/vahe.DMP" for read
  </code></pre>
  
  <p>dump directory  and vahe.dmp file have read and write permission. <img src="https://i.stack.imgur.com/PhaBu.png" alt="enter image description here"></p>
  
  <p>I use Database App Development VM.
  how can I fix this issue ?
  Thanks.</p>