Neoview ODBC Drivers Manual (R2.5)

On insertion, if character data presented by a Unicode-enabled application exceeds the size
of the database column, the Unicode driver truncates the data and reports an error to the
client.
On a fetch, if character data retrieved from the database exceeds the maximum length of the
client's data buffer, the Unicode driver truncates the data and reports an error to the client.
Error messages are in English. A Unicode application retrieves error messages in UTF-16
encoding in wide character buffers. An application that is not Unicode-enabled retrieves
error messages in the client locale in character buffers.
Unicode Driver Behavior 49