Please refer below MOS as see if it may help:
IBM AIX 6.1 & Newer: TCP Connections Intermittently Failing ORA-12547 , TNS-12547, TNS-12560 and OS Error 32 (Doc ID 1084443.1)
Listener Log Intermittently Reports: <unknown connect data> and either * 12537 or * 12569 errors (Doc ID 1664901.1)
-Chiranjeevi M A
Thank you Chiranjeevi
I checked those two note ids. both of it says its intermittent issue. However in my case it is not intermittent. the listener goes down exactly after 1 min. However there are another instance in the same node which is running perfectly.
Seems like it is encountering any oracle or OS level bug (i'm not sure although).
I enabled admin level trace for the listener.But did not get any error.
Is there any parameter which may cause the issue? Appreciate your help and valuable time.
Please verify and see if you see any problem.
1. Check the file system space
2. Check /etc/hosts and see if the entries were correctly set
3.Check size of listener.log file , if you see it is huge in size take backup of that file and create a new listener.log file.
-Chiranjeevi M A
Please post the last part of the listener log when this issue happens.
1. there are adequate space in the system.
2. /etc/hosts is ok.
3. Already did that. Current size of listener log is 33kb
Hi started the listener and waited until it goes down. Below is the log for this whole activity in listener log.
TNSLSNR for IBM/AIX RISC System/6000: Version 10.1.0.5.0 - Production on 05-OCT-2015 03:52:03
Copyright (c) 1991, 2004, Oracle. All rights reserved.
System parameter file is /app/ora3/inst/apps/VIS3_finhost1/ora/10.1.2/network/admin/listener.ora
Log messages written to /app/ora3/inst/apps/VIS3_finhost1/logs/ora/10.1.2/network/apps_VIS3.log
Trace information written to /app/ora3/inst/apps/VIS3_finhost1/logs/ora/10.1.2/network/apps_VIS3.trc
Trace level is currently 0
Started with pid=22348348
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=finhost1)(PORT=1696)))
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
05-OCT-2015 03:52:03 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=finhost1)(USER=VIS3))(COMMAND=status)(ARGUMENTS=64)(SERVICE=APPS_VIS3)(VERSION=168822016)) * status * 0