View logfile or view output hangs in 3 node environment

Hi All,
Briefing the environment:
Database -- ERPDB001
Conc + admin -- APPS001
Forms + web -- APPS002
Some times when we try to see view log or view output after running the Concurrent requests. The system seems like hanging and it will display following error after. If you check in the next minute, it will show the output/logfile. looks like a strange behavior
"An error occurred while attempting to establish an Application File Server connection with the node APPS001. There may be a network configuration problem, or the TNS listener on node APPS001 may not be running, Please contact your system administrator."
Is this the Oracle Apps issue or the network issue between two node.
Regards
Vasu

05-JUL-2008 09:51:56 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST
=<APPS002IP>)(PORT=56065)) * establish * FNDFS * 0
05-JUL-2008 09:51:59 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST
=<APPS002IP>)(PORT=56070)) * establish * FNDFS * 0
05-JUL-2008 09:52:16 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST
=<APPS002IP>)(PORT=56087)) * establish * FNDFS * 0
05-JUL-2008 10:20:28 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=<HostnameofAPPS001>)(US
ER=applprod))(COMMAND=status)(ARGUMENTS=64)(SERVICE=APPS_PROD)(VERSION=134243072
)) * status * 0
05-JUL-2008 10:20:28 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=<HostnameofAPPS001>)(US
ER=applprod))(COMMAND=stop)(ARGUMENTS=64)(SERVICE=APPS_PROD)(VERSION=134243072))
* stop * 0
05-JUL-2008 09:51:56 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=56065)) * establish * FNDFS * 0
05-JUL-2008 09:51:59 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=56070)) * establish * FNDFS * 0
05-JUL-2008 09:52:16 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=56087)) * establish * FNDFS * 0
05-JUL-2008 10:20:28 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=<HostnameofAPPS001>)(USER=applprod))(COMMAND=status)(ARGUMENTS=64)(SERVICE=APPS_PROD)(VERSION=134243072)) * status * 0
05-JUL-2008 10:20:28 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=<HostnameofAPPS001>)(USER=applprod))(COMMAND=stop)(ARGUMENTS=64)(SERVICE=APPS_PROD)(VERSION=134243072)) * stop * 0
TNSLSNR for Solaris: Version 8.0.6.3.0 - Production on 05-JUL-2008 10:25:03
(c) Copyright 1999 Oracle Corporation. All rights reserved.
Log messages written to /u02/applprod/prodora/8.0.6/network/admin/apps_prod.log
Listening on: (ADDRESS=(PROTOCOL=tcp)(DEV=10)(HOST=<IPofAPPS001>)(PORT=1676))
TIMESTAMP * CONNECT DATA [* PROTOCOL INFO] * EVENT [* SID] * RETURN CODE
05-JUL-2008 10:25:03 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=<HostnameofAPPS001>)(USER=applprod))(COMMAND=status)(ARGUMENTS=64)(SERVICE=APPS_PROD)(VERSION=134243072)) * status * 0
05-JUL-2008 10:25:34 * ping * 0
05-JUL-2008 10:25:35 * ping * 0
05-JUL-2008 10:25:35 * (CONNECT_DATA=(SID=FNDSM)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<IPofAPPS001>)(PORT=37849)) * establish * FNDSM * 0
05-JUL-2008 10:41:53 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=59076)) * establish * FNDFS * 0
05-JUL-2008 10:47:52 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=59435)) * establish * FNDFS * 0
05-JUL-2008 11:00:34 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=60186)) * establish * FNDFS * 0
05-JUL-2008 11:16:33 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=61139)) * establish * FNDFS * 0
05-JUL-2008 11:33:41 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=62210)) * establish * FNDFS * 0
05-JUL-2008 11:34:06 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=62236)) * establish * FNDFS * 0
05-JUL-2008 11:38:47 * 12502
TNS-12502: TNS:listener received no CONNECT_DATA from client
05-JUL-2008 11:46:32 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=62977)) * establish * FNDFS * 0
05-JUL-2008 12:12:37 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=64546)) * establish * FNDFS * 0
05-JUL-2008 12:12:39 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=64548)) * establish * FNDFS * 0
05-JUL-2008 12:13:37 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=64609)) * establish * FNDFS * 0
05-JUL-2008 12:26:42 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=65439)) * establish * FNDFS * 0
05-JUL-2008 12:26:44 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=65444)) * establish * FNDFS * 0
05-JUL-2008 12:27:22 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=65485)) * establish * FNDFS * 0
05-JUL-2008 12:28:38 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=32810)) * establish * FNDFS * 0
05-JUL-2008 12:30:14 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=32904)) * establish * FNDFS * 0
05-JUL-2008 12:30:27 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=32918)) * establish * FNDFS * 0
05-JUL-2008 12:51:17 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=34177)) * establish * FNDFS * 0
05-JUL-2008 13:47:59 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=37909)) * establish * FNDFS * 0
05-JUL-2008 13:48:02 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=37914)) * establish * FNDFS * 0
05-JUL-2008 14:15:10 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=39543)) * establish * FNDFS * 0
05-JUL-2008 14:15:12 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=39548)) * establish * FNDFS * 0
05-JUL-2008 14:25:03 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=40157)) * establish * FNDFS * 0
05-JUL-2008 14:25:07 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=40162)) * establish * FNDFS * 0
05-JUL-2008 14:25:17 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=39984)) * establish * FNDFS * 0
05-JUL-2008 14:26:19 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=40236)) * establish * FNDFS * 0
05-JUL-2008 16:32:50 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=47917)) * establish * FNDFS * 0
05-JUL-2008 16:32:55 * (CONNECT_DATA=(SID=FNDFS)) * (ADDRESS=(PROTOCOL=tcp)(HOST=<APPS002IP>)(PORT=47925)) * establish * FNDFS * 0
=========================
We found not much errors.
One time the error is
"05-JUL-2008 11:38:47 * 12502
TNS-12502: TNS:listener received no CONNECT_DATA from client"
But I used to get above Original error (Core issue) lot of times in the Application.
Even users are complaining about this.
Thanks and Regards
Vasu

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