Problem with file listener

When I wanted to know the status of a listener, it makes me the status of the listener on the other... it's just two different listeners, please help me understand what

[oracle@XXXXX admin] $ lsnrctl status listener_postgres

LSNRCTL for Linux: Version 11.2.0.3.0 - Production on 25-SEP-2013 15:46:06

Copyright (c) 1991, 2011, Oracle.  All rights reserved.

Connection to (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP (PORT = 1524))(HOST=scfdb001)))

STATUS of the LISTENER

------------------------

Alias listener_amazon

Version TNSLSNR for Linux: Version 11.2.0.3.0 - Production

Start date 13 - SEP - 2013 11:28:07

Uptime 12 days 4 h 17 min 59 sec

Draw level off

Security ON: OS Local Authentication

SNMP OFF

Parameter Listener of the /oracle/database/11.2.0.3/network/admin/listener.ora file

Summary of endpoints listening...

(DESCRIPTION = (ADDRESS = (PROTOCOL = tcp (PORT = 1524))(HOST=scfdb001)))

Summary of services...

Service 'mywlddv2' has 1 instance (s).

Instance of 'mywldqa', status UNKNOWN, has 1 operation for this service...

The command completed successfully

[oracle@scflsdb001 admin] $

user13573211 wrote:

I understand the question, I understand that I shouldn't be the same user port for two different listeners

The operating system prevents listening on the same port of two process/listeners simultaneously.

Only one listener can listen on multiple ports on multiple IP #s for several databases, execution of multiple versions of Oracle.

then explain why more than 1 listener exists on your system?

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