Oracle XML output (native) formatting

Got a few question on how to actually get properly formated XML straight from Oracle.
I'm not aware of any suitable DBMS function if there are any.
One way I to simply insert and select the query result in an Oracle xmltype data column in a temporary table. A temporary table is per session and is per default truncated when you commit.

set pages 0 long 900000 lines 100
-- create a temporary table with one xmltype column
create global temporary table xmlformat (data xmltype);

-- do the select but with an prefixed insert
insert into xmlformat select
  xmlelement("emp",
    xmlagg(xmlelement("employee",
      xmlattributes(empno as "id"),
      xmlelement("name",ename),
      xmlelement("job", job),
      xmlelement("hiredate", to_char(hiredate, 'YYYY/MM/DD')),
      xmlelement("deptno", deptno)
      )
    )
  )
from
  emp
where
  empno<=7566 
/

-- Ok, what do we got here, the output here is exactly 
-- as displayed by Oracle. No cheating. Do remember that this is 
-- a temporary table so the data is just for your current session 
-- and it will be lost when you commit (or end your session)

select data from xmlformat;

<emp>
  <employee id="7369">
    <name>SMITH</name>
    <job>CLERK</job>
    <hiredate>1980/12/17</hiredate>
    <deptno>20</deptno>
  </employee>
  <employee id="7499">
    <name>ALLEN</name>
    <job>SALESMAN</job>
    <hiredate>1981/02/20</hiredate>
    <deptno>30</deptno>
  </employee>
  <employee id="7521">
    <name>WARD</name>
    <job>SALESMAN</job>
    <hiredate>1981/02/22</hiredate>
    <deptno>30</deptno>
  </employee>
  <employee id="7566">
    <name>JONES</name>
    <job>MANAGER</job>
    <hiredate>1981/04/02</hiredate>
    <deptno>20</deptno>
  </employee>
</emp>

Querying XML data is next. :-)