BLOB with RTF with Arabic strings

Question

ORACLE 10.1.0.5.0.
NLS_CHARACTERSET: AL32UTF8
NLS_LANGUAGE: ITALIAN
We have a table with a BLOB colum.
In that column, we have a rich text format file and it can contain text in different languages (Arabic, chinese, italian, vietnamese, french, spanish text).
We've create a text index to search strings into that column but if we try to search an arabic word, it returns no results.
The DDL of the index is:
create index DBY_DB_DATA_IX
  on DB_REPOSITORY (DB_DATA)
  indextype is ctxsys.context
  parameters('
    lexer           MITO_LEXER
    wordlist        DEFAULT_WORDLIST
    stoplist        DBY_STOPLIST
    storage         DBY_TEXT_STORAGE
    SYNC (ON COMMIT) ')
/How I search arabic words using a TEXT INDEX?

Answer 1

BEGIN
   CTX_DDL.create_preference ('mito_lexer', 'BASIC_LEXER');
   CTX_DDL.set_attribute ('mito_lexer', 'INDEX_STEMS', 'ITALIAN');
--  search on Text Index for Asterisks
   CTX_DDL.set_attribute ('mito_lexer', 'printjoins', '*');
END;
/Edited by: user600979 on 24-set-2009 9.11