If the single-byte component of the Teradata-supplied Japanese client character sets do not provide all the characters you need, you can create your own site-defined client character set. The single-byte component of the client character set you create must be able to translate to the JIS X 0201 standard.
To create a client character set that defines single- and multibyte Japanese characters and translates in Vantage to Unicode, you must create an extended site-defined character set. For details, see Extended Site-Defined Client Character Sets.