login to sqlpus with system account.
sqlplus system@xe
see the present value
select dbms_xdb.gethttpport as "HTTP-Port", bms_xdb.getftpport as "FTP-Port" from dual;
--it shows actual value. now u want to change them, use the following?
begin
dbms_xdb.sethttpport('9999');
dbms_xdb.setftpport('2100');
end;
/
