title: How to backup Oracle database from server
body: <p>I connect to Oracle database server for backup database (.dmp file) to my computer with windows command line 
  I use syntax</p>
  
  <pre><code>expdp myuser/1234@[server_ip]:[serverport]/listener directory=my_data_pump_dir dumpfile=my_pump_backup.dmp nologfile=Y full=y
  </code></pre>
  
  <p>But Error message</p>
  
  <blockquote>
    <p>Connected to: Oracle Database 11g Release 11.2.0.1.0 - 64bit Production
    ORA-39001: invalid argument value
    ORA-39000: bad dump file specification
    ORA-31641: unable to create dump file "C:\app\User\admin\orcl\dpdump_DIR\my_pump_backup.dmp"
    ORA-27040: file create error, unable to create file
    OSD-04002: unable to open file
    O/S-Error: (OS 3) The system cannot find the path specified.</p>
  </blockquote>
  
  <p>What should I do?</p>