Problem with BASIC_LEXER

 RDBMS Version: 11.1.0.7.0
Operating System and Version : Linux x86_64
Error Number (if applicable) : DRG-00100
Product (i.e. SQL*Loader, Import, etc.) : Oracle Text
Product Version : 11.1.0.7.0

Problem with BASIC_LEXER

Good day.

Try to create an index and the use of Russian morphology, based on BASIC_LEXER, I receive an error.

SQL> alter session set nls_language=RUSSIAN;
Session altered
SQL> drop index test_c_IDX;
Index dropped
SQL> exec ctx_ddl.drop_preference('TEST_WORDLIST');
PL/SQL procedure successfully completed
SQL> begin
2 Ctx_Ddl.Create_Preference('TEST_WORDLIST', 'BASIC_WORDLIST');
3 ctx_ddl.set_attribute('TEST_WORDLIST','FUZZY_MATCH','AUTO');
4 ctx_ddl.set_attribute('TEST_WORDLIST','STEMMER','AUTO');