How to Configure 12c Enterprise Manager Database Express

Architecture for Oracle Enterprise Manager Database Express:

Check and configure DISPATCHERS parameter:

SQL> show parameter dispatchers

NAME          TYPE      VALUE
------------- --------- --------------------------------
dispatchers   string    (PROTOCOL=TCP) (SERVICE=cdb2XDB)

Use DBMS_XDB_CONFIG to set up HTTP or/and HTTPS ports

For HTTPS:

SQL> exec DBMS_XDB_CONFIG.sethttpsport(5500);

or for HTTP:

SQL> exec DBMS_XDB_CONFIG.sethttpport(5501);

To check the HTTPs or HTTP ports by:

SQL> select dbms_xdb_config.gethttpsport from dual;

GETHTTPSPORT
------------
5500

SQL>select dbms_xdb_config.gethttpport from dual;

GETHTTPPORT
-----------
5501