IBM/AIX RISC System/6000 Error: 13: Permission denied

While starting listener on Oracle Applications through adalnctl.sh exited with,

adalnctl.sh: exiting with status 1

Following was found in the log file.

LSNRCTL for IBM/AIX RISC System/6000: Version 8.0.6.3.0 - Production on 25-JAN-2013 03:49:52

(c) Copyright 1999 Oracle Corporation.  All rights reserved.

Connecting to (ADDRESS=(PROTOCOL=TCP)(Host=XXX)(Port=1626))
TNS-12224: TNS:no listener
 TNS-12541: TNS:no listener
  TNS-12560: TNS:protocol adapter error
   TNS-00511: No listener
    IBM/AIX RISC System/6000 Error: 79: Connection refused
Starting listener process APPS_XXX.

LSNRCTL for IBM/AIX RISC System/6000: Version 8.0.6.3.0 - Production on 25-JAN-2013 03:49:55

(c) Copyright 1999 Oracle Corporation.  All rights reserved.

Starting /oraapp/ncrmprd6ora/8.0.6/bin/tnslsnr: please wait...

TNSLSNR for IBM/AIX RISC System/6000: Version 8.0.6.3.0 - Production
Log messages written to /oraapp/XX/8.0.6/network/admin/apps_XX.log
Listening on: (ADDRESS=(PROTOCOL=tcp)(DEV=6)(HOST=XXX7)(PORT=1626))
Attempted to listen on: (ADDRESS=(PROTOCOL=ipc)(PARTIAL=yes)(QUEUESIZE=1))
TNS-12546: TNS:permission denied
 TNS-12560: TNS:protocol adapter error
  TNS-00516: Permission denied
   IBM/AIX RISC System/6000 Error: 13: Permission denied

To resolve this issue generated a trace, found an issue with permission on /tmp/.oracle check the analysis below,

truss -aefo check.lst lsnrctl start APPS_XXX

Found that my listener was not able access /tmp/.oracle,

885468: socket(1, 1, 0)                                 = 9
885468: _getpid()                                       = 885468
885468: access("/tmp/.oracle/s#885468.1", 0)            Err#13 EACCES
885468: close(9)                                        = 0
885468: lseek(8, 18944, 0)                              = 18944
885468: kread(8, "\00F04 /\0\0\0 b04 0\0\0".., 512)     = 512

[MITHUN:]-/tmp> ls -ltr .oracle
ls: 0653-345 .oracle/s#246172.1: Permission denied.
ls: 0653-345 .oracle/s#278740.1: Permission denied.
ls: 0653-345 .oracle/s#1410002.1: Permission denied.
ls: 0653-345 .oracle/s#2486458.1: Permission denied.
total 0
[:MITHUN:]-/tmp> cd .oracle
ksh: .oracle: Permission denied.

[:MITHUN:]-/tmp> ls -la | grep oracle
drw-r-----    2 applmgr  dba             256 Jan 02 05:48 .oracle
[:MITHUN:]-/tmp> id
uid=204(applmgr) gid=203(dba) groups=1(staff)
[:MITHUN:]-/tmp> chmod 777 .oracle
[:MITHUN:]-/tmp> lsnrctl start APPS_XXXX

LSNRCTL for IBM/AIX RISC System/6000: Version 8.0.6.3.0 - Production on 25-JAN-2013 05:47:27

(c) Copyright 1999 Oracle Corporation.  All rights reserved.

Starting /oraapp/ncrmprd6ora/8.0.6/bin/tnslsnr: please wait...

TNSLSNR for IBM/AIX RISC System/6000: Version 8.0.6.3.0 - Production
Log messages written to /oraapp/ncrmprd6ora/8.0.6/network/admin/apps_XXXX.log
Listening on: (ADDRESS=(PROTOCOL=tcp)(DEV=6)(HOST=XXX)(PORT=1626))

Connecting to (ADDRESS=(PROTOCOL=TCP)(Host=XX)(Port=1626))
STATUS of the LISTENER
------------------------
Alias                     APPS_XX
Version                   TNSLSNR for IBM/AIX RISC System/6000: Version 8.0.6.3.0 - Production
Start Date                25-JAN-2013 05:47:29
Uptime                    0 days 0 hr. 0 min. 0 sec
Trace Level               off
Security                  OFF
SNMP                      ON
Listener Log File         /oraapp/XXd6ora/8.0.6/network/admin/apps_XXX.log
Services Summary...
  FNDFS         has 1 service handler(s)
  FNDSM         has 1 service handler(s)