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[oracle@localhost ~]$ lsnrctl startLSNRCTL for Linux: Version 11.2.0.1.0 - Production on 06-AUG-2014 20:02:16Copyright (c) 1991, 2009, Oracle.  All rights reserved.Starting /opt/oracle/11g/bin/tnslsnr: please wait...TNS-12537: TNS:connection closedTNS-12560: TNS:protocol adapter errorTNS-00507: Connection closedLinux Error: 29: Illegal seek

[oracle@localhost ~]$ lsnrctl statusLSNRCTL for Linux: Version 11.2.0.1.0 - Production on 06-AUG-2014 20:02:48Copyright (c) 1991, 2009, Oracle.  All rights reserved.Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
TNS-12541: TNS:no listenerTNS-12560: TNS:protocol adapter errorTNS-00511: No listenerLinux Error: 111: Connection refused
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=localhost)(PORT=1521)))
TNS-12541: TNS:no listenerTNS-12560: TNS:protocol adapter errorTNS-00511: No listenerLinux Error: 111: Connection refused

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

hostname oracle

127.0.0.1 localhost localhost.domain
192.168.0.1 oracle

hostname = oracle

[oracle@oracle ~]$ lsnrctl startLSNRCTL for Linux: Version 11.2.0.1.0 - Production on 06-AUG-2014 20:07:41Copyright (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