Oracle Listener fails to start (tns-12537,tns-12560,tns-00507)

Oracle initiates monitoring error, indicating connection interruption

[oracle@localhost ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 06-AUG-2014 20:02:16 Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Starting /opt/oracle/11g/bin/tnslsnr: please wait...

TNS-12537: TNS:connection closed
 TNS-12560: TNS:protocol adapter error
  TNS-00507: Connection closed
   Linux Error: 29: Illegal seek

This is generally the host name is not correct, observe the listening status, monitoring host named localhost:

[oracle@localhost ~]$ lsnrctl status

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 06-AUG-2014 20:02:48 Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
TNS-12541: TNS:no listener
 TNS-12560: TNS:protocol adapter error
  TNS-00511: No listener
   Linux Error: 111: Connection refused

View host name, found in/etc/hosts localhost only want multiple addresses, triggering a listener conflict

[root@localhost ~]# cat /etc/hosts 127.0.0.1 localhost.domain localhost 10.4.40.70  localhost

Modify Host Name:

1 hostname

Hostname Oracle

2/etc/hosts

127.0.0.1 localhost localhost.domain192.168.0.1 Oracle

3/etc/sysconfig/network

hostname = Oracle

Start again, success

[oracle@oracle ~]$ lsnrctl start

LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 06-AUG-2014 20:07:41 Copyright (c) 1991, 2009, Oracle.  All rights reserved.

Starting /opt/oracle/11g/bin/tnslsnr: please wait...

TNSLSNR for Linux: Version 11.2.0.1.0 - Production
System parameter file is /opt/oracle/11g/network/admin/listener.ora
Log messages written to /opt/oracle/diag/tnslsnr/oracle/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))

Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER ------------------------ Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 11.2.0.1.0 - Production
Start Date 06-AUG-2014 20:07:43 Uptime 0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File /opt/oracle/11g/network/admin/listener.ora
Listener Log File /opt/oracle/diag/tnslsnr/oracle/listener/alert/log.xml
Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=127.0.0.1)(PORT=1521)))
The listener supports no services
The command completed successfully