java CHARACTERSET in Oracle Types and Collections... "???"

Today I had problem that my code that generate oracle object was having trouble with char data...The code worked on dev. environment ok, but on test was different story. The Struct Object attribute witch data was char had value "???". So I found that the Charset are diffrent, on test was 'EE8ISO8859P2'.

select * from v$nls_parameters where parameter like '%CHARACTERSET%';

So I put in my war  file 2 more jar files. orai18n.jar and orai18n-mapping.jar. After that everything worked properly