CALL_FUNCTION_OPEN_ERROR in CRM while trying to connect to ECC system

Question

Hi All,
We are having issues while connecting to ECC system from CRM at specific point of time.
It occurred only once yesterday . Since it is a production system, we need to investigate the cause of the issue.
Upon checking the logs, I can see dumps in ST22 stating CALL_FUNCTION_OPEN_ERROR while trying to connect to ECC.
This issue has been faced by multiple users at the same time.
Both CRM and ECC are in the same server . There are no errors in ECC system ,
The error description says
Error opening RFC connection
Error text........... "Group USER not found"
Description.......... "LgIGroupX"
The response time is fine for the system and during the time when the error occurred.
Both the systems are in kernel 720 patch level 416.
There are no errors in dev_rd and dev_ms as well.
The errors in trace file also give information that ECC system cannot be reached.
However our ECC system was available , up and running and there were no issues at that time with ECC.
I have attached the dump, kernel and patch level details , work process trace files and the response times.
Please suggest.
Thanks,
Sowmya.

Answer 1

LB: Hostname or service of the message server unknown#DEST =PUCCLNT220#MSHOST
=puc.apps.eon.com#R3NAME =PUC#GROUP =USER"
disp+work information
kernel release 720
kernel make variant 720_EXT_REL
compiled on Linux GNU SLES-11 x86_64 cc4.3.4 use-pr121116 for linuxx86_64
compiled for 64 BIT
compilation mode UNICODE
compile time Feb 16 2013 02:50:12
update level 0
patch number 416
source id 0.416
Error from work process trace file
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
A  reached MAX_RUDILOCKS for (user: L13526      , ta:                     ), sending RUDILOCK_RESET
M
M Mon Apr 20 15:48:09 2015
M  ThPlgTimeout: ThPlgTimeout for plugin T144/U17974
A
A Mon Apr 20 15:58:59 2015
A  *** ERROR => RFC Error RFCIO_ERROR_SYSERROR in abrfcpic.c : 2825
LB: Hostname or service of the message server unknown
DEST =PUCCLNT220
MSHOST =puc.apps.eon.com
R3NAME =PUC
GROUP =USER
[abrfcio.c    9213]
A {root-id=441EA15C8F181ED4B9E4168F16E66417}_{conn-id=441EA15C8F181ED4B9E416A941234417}_1
A  TH VERBOSE LEVEL FULL
A  ** RABAX: end RX_GET_MESSAGE
A
A Mon Apr 20 15:59:02 2015
A  *** ERROR => RFC Error RFCIO_ERROR_SYSERROR in abrfcpic.c : 2825
LB: Hostname or service of the message server unknown
DEST =PUCCLNT220
MSHOST =puc.apps.eon.com
R3NAME =PUC
GROUP =USER
[abrfcio.c    9213]
A  {root-id=441EA15C8F181ED4B9E4168F16E66417}_{conn-id=441EA15C8F181ED4B9E416A941234417}_1
A  *** ERROR => RFC Error RFCIO_ERROR_SYSERROR in abrfcpic.c : 2825
LB: Hostname or service of the message server unknown
DEST =PUCCLNT220
MSHOST =puc.apps.eon.com
R3NAME =PUC
GROUP =USER
[abrfcio.c    9213]
A {root-id=441EA15C8F181ED4B9E4168F16E66417}_{conn-id=441EA15C8F181ED4B9E416A941234417}_1
A  *** ERROR => RFC Error RFCIO_ERROR_SYSERROR in abrfcpic.c : 2825
LB: Hostname or service of the message server unknown
DEST =PUCCLNT220
MSHOST =puc.apps.eon.com
R3NAME =PUC
GROUP =USER
[abrfcio.c    9213]
A {root-id=441EA15C8F181ED4B9E4168F16E66417}_{conn-id=441EA15C8F181ED4B9E416A941234417}_1