All my trails to get an unicode string via TOracleQuery.FieldAsString have failed. For example I tried 'StringToWideChar'. But the result is always a string like '
For Unicode Oracle has NVARCHAR2 data type. I tried a simple "insert into..." statement with TOracleQuery.SetVariable, but got "ORA-12704: character set mismatch". It seems that this data type currently is not supported by DOA. No luck getting Unicode data into Oracle so far...