Preparing a database for Multiple Languages

Greetings All, I am building a database that needs to support three Asian and five European languages.
I have created the database with the UTF8 character set and I believe that that is all I need to do on
the database server end. Can anyone tell me if there is anything else that I need to do on the database
server end to begin accepting and storing all these languages? I ask this because we have set up a client
that can handle UTF8 data and we are passing in Japanese data. In some instances the data goes in and
comes back out of the database ok, especially if the Japanese word is only a single character. However,
if a Japanese word that is several characters goes into the database we only get a few of the leading characters
back with the rest being garbage? I just need to know if setting up the Oracle database is as simple as
setting the database character set and if I should be looking more towards the client for resolving this issue.
In this question you need not worry about formatting dates, money or even about sorting the Unicode data.

Thank, LF

Solaris 2.7
Oracle 8.1.6.2 Received on Fri Mar 09 2001 - 13:54:31 CST