Linux Error 111 – Connection Refused LSNRCTL

listeneroracle-12c

I have a problem starting my listener, I am using Centos 6.5 and Oracle 12cR1.

Database has been installed successfully.

Now my issue is when I start my listener, the following error is shown:

LSNRCTL> service
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=gaurav)(PORT=1521)))
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=IPC)(KEY=EXTPROC1521)))
Services Summary...
Service "tuts" has 1 instance(s).
Instance "tuts", status UNKNOWN, has 1 handler(s) for this service...
 Handler(s):
  "DEDICATED" established:0 refused:0
     LOCAL SERVER
 The command completed successfully

My hostname is gaurav

So i create an entry in hosts file as 

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
 192.168.1.1        gaurav      oracle

Also, I have created a listener.ora file, with contents as follows:

LISTENER =
  (DESCRIPTION_LIST =
   (DESCRIPTION =
     (ADDRESS = (PROTOCOL = TCP)(HOST =gaurav)(PORT = 1521))
      (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
    )
  )

sid_list_listener=
   (sid_list=
   (sid_desc=
   (oracle-home=/home/oracle/app/oracle/product/12.1.0/dbhome_1)
   (sid_name=tuts)))

I am able to ping my host gaurav.

Can anyone please help me in fixing the issue?

EDIT

[oracle@gaurav ~]$ lsnrctl start

LSNRCTL for Linux: Version 12.1.0.1.0 - Production on 05-JUN-2014 22:38:57

Copyright (c) 1991, 2013, Oracle.  All rights reserved.

Starting /home/oracle/app/oracle/product/12.1.0/dbhome_1/bin/tnslsnr:  please wait...

TNSLSNR for Linux: Version 12.1.0.1.0 - Production
System parameter file is /home/oracle/app/oracle/product/12.1.0/dbhome_1 /network/admin/listener.ora
Log messages written to /home/oracle/app/oracle/diag/tnslsnr/gaurav/listener/alert/log.xml
 Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gaurav) (PORT=1521)))
 Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))

 Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=gaurav)(PORT=1521)))
  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=IPC)(KEY=EXTPROC1521)))
STATUS of the LISTENER
 ------------------------
 Alias                     LISTENER
Version                   TNSLSNR for Linux: Version 12.1.0.1.0 - Production
Start Date                05-JUN-2014 22:38:59
Uptime                    0 days 0 hr. 0 min. 1 sec
Trace Level               off
Security                  ON: Local OS Authentication
SNMP                      OFF
Listener Parameter File   /home/oracle/app/oracle/product/12.1.0/dbhome_1 /network/admin/listener.ora
Listener Log File         /home/oracle/app/oracle/diag/tnslsnr/gaurav /listener/alert/log.xml
 Listening Endpoints Summary...
  (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gaurav)(PORT=1521)))
  (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Services Summary...
Service "tuts" has 1 instance(s).
Instance "tuts", status UNKNOWN, has 1 handler(s) for this service...
The command completed successfully

Best Answer

To me it looks like you did not start the listener but it is started. Your problem seems to be the tcp connection and not the ipc. So the listener is running, you can not reach it using tcp. Test this using telnet gaurav 1521

If the telnet does not give a connection, a firewall is blocking you. Stop/edit the firewall.

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