Oracle11g: How to configure a database to register dynamically a service in a listener that not use the default port

First you need to define the listener with a port that is not the default port by registering your listener configuration in the listener.ora file.

# listener.ora Network Configuration File: /opt/oracle/11.2.0/network/admin/listener.ora
# Generated by Oracle configuration tools.

LISTENER =
  (DESCRIPTION =
    (ADDRESS = (PROTOCOL = TCP)(HOST = myhost)(PORT = 1523))
  )

ADR_BASE_LISTENER = /opt/oracle

Run the listener using the following command:

>lsnrctl start

or using the srvctl command:

>srvctl start listener

Then you can update your database parameter in order to define the address of the listener:

Using sql ;
SQL>ALTER SYSTEM SET LOCAL_LISTENER='(ADDRESS=(PROTOCOl=TCP)(HOST=myhost)(PORT=1523))' SCOPE=BOTH;

If you listener is running on a different host then the database, you need to update the REMOTE_LISTER database parameter. This parameter will reference a network alias that must be declared in the tnsnames.ora file of the database.
For example, you can write in your tnsnames.ora file where is located your database :

# tnsnames.ora Network Configuration File: /opt/oracle/11.2.0/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.

MY_REMOTE_ALIAS =
  (ADDRESS_LIST =
    (ADDRESS = (PROTOCOL = TCP)(HOST = myhost2)(PORT = 1523))
  )

and update the remote_listener database parameter in this way :

SQL>ALTER SYSTEM SET REMOTE_LISTENER='MY_REMOTE_ALIAS' SCOPE=BOTH;

The database will try to connect on host2 and port number 1523 to register dynamically all its services.

Remark:
Check the following situation :

1. Define a listener that has a name different than the default one (for example MY_LISTNER  instead of  LISTENER)

   # listener.ora Network Configuration File: /opt/oracle/11.2.0/network/admin/listener.ora
   # Generated by Oracle configuration tools.
   
   MY_LISTENER =
     (DESCRIPTION =
       (ADDRESS = (PROTOCOL = TCP)(HOST = myhost)(PORT = 1523))
     )
   
   ADR_BASE_LISTENER = /opt/oracle

2. start the listener

   >lsnrctl start MY_LISTENER

   or

   >srvctl start listener -l MY_LISTNER

3. Set the LOCAL_LISTENER parameter to its initial value (an empty string)

   SQL> ALTER SYSTEM SET LOCAL_LISTENER='' SCOPE=BOTH;
   SQL> show parameter local_listener
   
   NAME                                 TYPE        VALUE
   ------------------------------------ ----------- ------------------------------
   local_listener                       string
   

4. Start the default listener

   >lsnrctl start

Then, you will see that the database register its configuration under the listener MY_LISTENER listening on port 1523 but also in the default listener LISTENER listening on port 1521. This is due to the fact that we do not update the LOCAL_LISTNER value !