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SQL> connect system

Enter password:

Connected.

SQL> select dbms_xdb.gethttpport from dual;

GETHTTPPORT

-----------

       8080

SQL> begin dbms_xdb.sethttpport('8888');

  2  end;

  3  /

PL/SQL procedure successfully completed.

SQL> select dbms_xdb.gethttpport from dual;

GETHTTPPORT

-----------

       8888