An error occurred while attempting to establish an Applications File Server connection with the node FNDFS_Hostname.

 

Error:

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

Environment:

1) 19c database and 12.2.9 environment , Three node database and 2 Node (PCP)

Recent Changes

Ran Auto config in all db and application node as a part of patching.

Issue:

1) After starting all database and application services,

2) We are not able to see output and logs from the front end.

3) All application services started without error.

Solution:

As the TNS and Context file has been backed up already before patching, We restore the whole TNS with the permission 755 and then the issue gets resolved.