Validating UTF-8 documents error

Question

Dear experts!
I get utf8 saved xml documents into an oracle table (BLOB) of a WE8ISO8859-1 database. I use the following procedure to get a CLOB from the xml documents:
FUNCTION BLOB_TO_CLOB (blob_in IN BLOB)
RETURN CLOB
AS
     v_clob CLOB;
     v_varchar NVARCHAR2(32767); --UTF8
     v_start     PLS_INTEGER := 1;
     v_buffer PLS_INTEGER := 32767;
BEGIN
     DBMS_LOB.CREATETEMPORARY(v_clob, TRUE);
     FOR i IN 1..CEIL(DBMS_LOB.GETLENGTH(blob_in)/v_buffer)
     LOOP
     v_varchar := UTL_RAW.CAST_TO_NVARCHAR2(DBMS_LOB.SUBSTR(blob_in, v_buffer, v_start));
DBMS_LOB.WRITEAPPEND(v_clob, LENGTH(v_varchar), v_varchar);
          v_start := v_start + v_buffer;
     END LOOP;
RETURN v_clob;
END blob_to_clob;
In an other procedure I want to validate the xml docs with a schema:
begin
          xmltype.schemaValidate(l_xmldaten);
     EXCEPTION
          when OTHERS then
               l_exception := sqlerrm;
               dbms_output.put_line('Error: ' || l_exception);
          end;
On validating against the schema I get the following exception back:
ORA-31043: Element '' nicht global in Schema '' definiert
Any ideas?
Thanks
Markus

Answer 1

Have a look on this forum regarding NLS issues for instance:
Re: Conversion UTF-8 -> WINDOWS-1250
XML DB