title: I have problem to connect oracle DB with SQL developer
body: <p>I try connect to my oracle db with oracle SQL developer and received that message:
  <a href="http://ioj.com/v/camkp" rel="nofollow noreferrer">pic</a> (pictures 1 and 2)</p>
  
  <p>if i try connect with sql plus, all well. </p>
  
  <pre><code>command : select userenv('LANGUAGE') from dual;
  result:
  Connected to:
  Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
  SQL&gt; select userenv('LANGUAGE') from dual;
  
  *USERENV('LANGUAGE')
  ----------------------------------------------------
  RUSSIAN_RUSSIA.CL8MSWIN1251*
  </code></pre>
  
  <p>in SQL DEVELOPER: 
  (picture 3)</p>
  
  <blockquote>
    <p>check\uncheck "Skip NLS Settings", nothing changed.</p>
  </blockquote>
  
  <p>what the issue is?</p>