Oracle Unicode problem when using NLS_CHARACTERSET is WE8ISO8859P1 and NLS_NCHAR_CHARACTERSET is AL16UTF16, and ColdFusion as programming language
First database stores values in utf-8 encoding, second in iso-8859-1(besides N-datatypes), however you are writing out both values in utf-8 so first one is alright, but second one is wrong decoded.
WE8ISO88591 encoding has a limited character set and can not store all unicode characters. Please refer to http://en.wikipedia.org/wiki/ISO/IEC_8859-1 for list of supported characters.
The first step is to check the NLS environment variables because they determine the conversion (if needed). Also check the contents for NLS_SESSION_PARAMETERS inside a coldfussion page .