An error occurred while attempting to establish an Application File Server

I had to restart oracle applications 12i services. I started database services, listener, middle tier and concurrent tier services. Concurrent manager started fine. While accessing completed requests log or output file I noticed given below error.

Issue

An error occurred while attempting to establish an Application File Server connection with the node <ConcurrentTierServer> . There may be a network configuration problem, or the TNS listener on node <ConcurrentTierServer> may not be running. Please contact your system administration.

Troubleshooting

1. I insured there was no sqlplus connectivity issue from Middle Tier, Concurrent Manager Tier to Database.
2. Validated tns lister running on concurrent tier

   $ps –ef | grep tnslsnr | grep APPS_<TWO_TASK>

   APPS_$TWO_TASK process must be running

3. Relinked all fnd executable ($FND_TOP/bin ) using adadmin

Solution

Above did not helped resolving issue. I had to perform following to resolve issue.

1. Relinked FNDFS, FNDSM executable using adrelink

   Source Application Enviroment

    

   $. INST_TOP/ora/10.1.3/$ APPLFENV

   adrelink.sh force=y "ad FNDSM"

   adrelink.sh force=y "ad FNDFM"

    

2. Restarted Concurrent Manage and apps listener serices
3. Login to OES as sysadmin

   Concurrent Request à Search for some request and try to see log or output file. You should be able to view log file