On my way to my solution store just found this nice to use, old and easy feature. Possibilities endless, usage typically very easy.
I used the following to generate XML from sqlplus:
select dbms_xmlgen.getxml('select * from user') from dual;
Output: < ROWSET > < ROW > < TNAME >Employee< / TNAME > < TABTYPE > TABLE < / TABTYPE > < / ROW > < / ROWSET >