title: Oracle DB: encoding for RU
body: <p>Good day. I try to retrieve russian characters with Oracle db. I try to set env. variables, change NLS_LANG in preferences of the SQL Developer... And what i have now:</p>
  
  <pre><code>PARAMETER                      VALUE                                                          
  ------------------------------ ----------------------------------------------------------------
  NLS_LANGUAGE                   RUSSIAN                                                          
  NLS_TERRITORY                  RUSSIA                                                           
  NLS_CURRENCY                   ¿.                                                               
  NLS_ISO_CURRENCY               RUSSIA                                                           
  NLS_NUMERIC_CHARACTERS         .,                                                               
  NLS_CALENDAR                   GREGORIAN                                                        
  NLS_DATE_FORMAT                DD.MM.RR                                                         
  NLS_DATE_LANGUAGE              RUSSIAN                                                          
  NLS_SORT                       RUSSIAN                                                          
  NLS_TIME_FORMAT                HH24:MI:SSXFF                                                    
  NLS_TIMESTAMP_FORMAT           DD.MM.RR HH24:MI:SSXFF                                           
  NLS_TIME_TZ_FORMAT             HH24:MI:SSXFF TZR                                                
  NLS_TIMESTAMP_TZ_FORMAT        DD.MM.RR HH24:MI:SSXFF TZR                                       
  NLS_DUAL_CURRENCY              ¿.                                                               
  NLS_COMP                       BINARY                                                           
  NLS_LENGTH_SEMANTICS           BYTE                                                             
  NLS_NCHAR_CONV_EXCP            FALSE                                                            
  
   17 rows selected 
  
  COL1       COL2                                     
  ---------- --------------------------------------------------
  ¿¿¿¿       ¿¿¿¿¿¿¿¿¿¿¿ ¿¿¿¿ ¿ ¿¿¿¿¿¿¿¿¿¿      
  </code></pre>