Analytics Software

hi, my obiee is showing japanese, the data is japanese.
and the database is oracle database.

currently, I found that the prompt does not work,
I directly copyt the japanese characters on the table on the dashboard, it always returns "no choice".

is it a must to change the database character set (NLS_CHARACTERSET) to be "JA16SJIS" ?

and is the NLS_LANG of oracle client involved in this issues?

any other settings?

thank you very much!