title: Why do I get ORA-39001: invalid argument value when I try to impdp in Oracle 12c?
body: <p>When I run this command in Oracle 12c SE2:</p>
  
  <pre><code>impdp system/Oracle_1@pdborcl directory=DATA_PUMP_DIR dumpfile=mydb.dmp nologfile=Y
  </code></pre>
  
  <p>I get this:</p>
  
  <blockquote>
    <p>ORA-39001 : invalid argument value</p>
    
    <p>ORA-39000 : bad dump file specification</p>
    
    <p>ORA-39088 : directory name DATA_PUMP_DIR is invalid</p>
  </blockquote>
  
  <p>We used to import this into 11g all the time.</p>
  
  <p>How can I solve these errors?</p>