title: Can't get DBMS_LOB.FILEEXISTS to return 1
body: <p>I have a file <code>/home/oracle/x.sql</code> and on sqlplus I'm executing:</p>
  
  <p><code>CREATE OR REPLACE DIRECTORY BLOB_DIR AS '/home/oracle';</code></p>
  
  <p><code>SELECT DBMS_LOB.FILEEXISTS(BFILENAME('BLOB_DIR', 'x.sql')) from dual;</code></p>
  
  <p>but it prints <code>0</code> (File doesn't exists)</p>
  
  <p>what am I doing wrong?</p>
  
  <p>Thank you!</p>