Errorpingingoracle:="the server use charset with id: 846 which is not supported by the driver

[You-chang-ho]

Errorpingingoracle:="the server use charset with id: 846 which is not supported by the driver

SQL> SELECT NLS_CHARSET_ID('KO16MSWIN949') FROM DUAL;

NLS_CHARSET_ID('KO16MSWIN949')

                       846

SQL> select * from nls_database_parameters where parameter like '%CHAR%';

PARAMETER VALUE

---

NLS_NCHAR_CONV_EXCP FALSE NLS_NUMERIC_CHARACTERS ., NLS_NCHAR_CHARACTERSET AL16UTF16 NLS_CHARACTERSET KO16MSWIN949

Is this character set an unsupported feature?