If you are using a SQL Anywhere® v10 database to store your repository information in a unicode format, you must create the database with the -z option set to an appropriate value.
For example, to create a database to correctly store Japanese characters, you should use the following option:
-z 932JPN -zn UTF8BIN
For a list of the -z options for all the supported languages, see the SQL Anywhere documentation, available at: http://sybooks.sybase.com/nav/detail.do?docset=1333