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  3. August 2015

RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

Jim,

1) Utilizing AJS, I have two jobs on each LPAR.

I have both traces starting 1 minutes before the SAVRSTOBJ runs.
DLTCMNTRC CFGOBJ(ETHVIRT00) CFGTYPE(*LIN)
TRCINT SET(*END) TRCTBL('TRCEE')
TRCINT SET(*ON) TRCTBL(TRCEE) SIZE(700 *MB) TRCFULL(*STOPTRC) TRCTY...
STRCMNTRC CFGOBJ(ETHVIRT00) CFGTYPE(*LIN) MAXSTG(32M) USRDTA(*MAX) ...

I have both traces stopping 6 minutes later, which is slightly longer than the SAVRSTOBJ hangs.

TRCINT SET(*OFF) TRCTBL('TRCEE') OUTPUT(*PRINT)
ENDCMNTRC CFGOBJ(ETHVIRT00) CFGTYPE(*LIN)
PRTCMNTRC CFGOBJ(ETHVIRT00) CFGTYPE(*LIN) CODE(*ASCII) FMTTCP(*YES)...

The TRCINT is 420,000 pages for the 6 minutes.
The PRTCMNTRC is 23,000 pages for the same window.

2) I ran a query over the AJS job history file (QAIJSHST), selecting SAVRSTOBJ job when the run time was greater than 3 minutes, indicating probably a failure/hang.
A normal run is 2 minutes or less.
Below are the results.
This reveals the SAVRSTOBJ hang is occurring more often than I thought, not always reported.

Management requested that I move the SAVRSTOBJ job outside the 8 to 5 window, not to impact production.
Job now runs at 6:25.

08/04/15 10:48:24 AJS OBJCLNL SAVRSTOBJ failures PAGE 1
Job Name Last Run Last Start Last End Elapsed
Date Time Time Time
OBJCLNL 14/03/05 8:00 8:05 6
OBJCLNL 14/03/12 6:30 6:35 6
OBJCLNL 14/03/28 6:30 6:36 6
OBJCLNL 14/03/30 6:30 6:36 6
OBJCLNL 14/04/05 6:30 6:36 7
OBJCLNL 14/05/19 6:30 8:19 109
OBJCLNL 14/10/03 8:30 8:37 8
OBJCLNL 14/11/21 8:30 8:34 5
OBJCLNL 15/01/22 8:30 8:35 6
OBJCLNL 15/02/02 8:30 8:37 8
OBJCLNL 15/02/13 8:30 8:38 8
OBJCLNL 15/02/17 8:30 8:35 6
OBJCLNL 15/02/28 8:30 8:35 6
OBJCLNL 15/03/10 8:30 8:34 4
OBJCLNL 15/03/15 8:30 8:34 5
OBJCLNL 15/07/21 8:30 8:35 6
OBJCLNL 15/07/29 8:30 8:37 7
OBJCLNL 15/08/03 8:30 8:35 5
* * * E N D O F R E P O R T * * *

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Tuesday, August 04, 2015 8:01 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

Paul:

The only thing I'm seeing is an occasional B6007101 which is an APPN session failure, and I know why those happened. A comm line went down.

I think a comm trace and PMR are in your near future unfortunately.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Monday, August 03, 2015 7:55 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

Jim,

Did you ever get to check your LIC LOG entries.

We had a reoccurrence this morning.
The same job containing a SAVRSTOBJ job triggered the issue at 8:31.
Same LIC log entry
08002376 Source/Sink information 0701 0C00 08/03/15 08:31:11 6

At least two users that were already passed through on LPAR B - Pencor06 , were hung.
Once the SAVRSTOBJ completed, they were fine.

The SAVRSTOBJ normally takes 50 seconds.
When the STRPASTHR jobs notice the hanging, the SAVRSTOBJ takes about 4 minutes.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Friday, July 24, 2015 2:41 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

I will but it will be later since I'm not in the office until Wednesday.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Friday, July 24, 2015 10:38 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

Jim,

Please check if you have this same error in your lic log at the time of the failure.

08000F46 Source/Sink information 0701 0C00 07/21/15 08:32:17 6

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Friday, July 24, 2015 10:38 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

Jim,

On both your V5R4 and V7R1 systems?

1) Do you have EE configured?
2) Do you use SAVRST*** cmds?
3) Do you use STRPASTHR?

I also only see this once every several months.
We SAVRST*** both directions, but the issue only occurs A to B.
STRPASTHR is only A to B.

Paul


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Wednesday, July 22, 2015 4:53 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

On that system about every 90 days or so.

On my V7Rx systems I've not had a problem.

I like the thought of the AJS to set the comm trace.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Wednesday, July 22, 2015 3:48 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

Jim,

How often do you see this?
I was not successful in gathering comm traces, they need to be running prior to the error.
I'm considering setting up AJS scheduled jobs to start and end the comm traces, during the same time we run the SAVRST*** jobs.

Paul

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Oberholtzer
Sent: Wednesday, July 22, 2015 4:36 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: savrstobj and strpasthr both hanging for 2 to 4 minutes

Paul,

I've seen this behavior but it's on a V5R4 system so I'm not sure it's relevant. When that happens we force the vary off of the enterprise controller and the controller named for the target. Same thing on the target side. Then restart the target then the local system. There must be a TCP timeout somewhere because we have to leave the controllers varied off for at least 3 minutes.

My own guess, and its' purely a guess is the HPR transport code has some
sort of problem. IBM's gonna want a comm trace to diagnose it.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects


-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Steinmetz, Paul
Sent: Wednesday, July 22, 2015 3:16 PM
To: 'Midrange Systems Technical Discussion'
Subject: savrstobj and strpasthr both hanging for 2 to 4 minutes

I had a repeat of an old issue, savrstobj and strpasthr both hanging for 2 to 4 minutes.
Had multiple previous posts on similar issue.

We use both SAVRSTOBJ and SAVRSTLIB to move objects between LPARS.
We also use STRPASTHR to connect from LPAR to LPAR.

Previously, Enterprise Extender controllers needed resets, not this time.

This time, no error messages, no resets, just a hang.

Could this be a lock, seize, other issue?
Is there any reason why multiple processes (Strpasthr/Savrrstob) cannot be started/initiated concurrently?

Any thoughts?

Thank You
_____
Paul Steinmetz
IBM i Systems Administrator

Pencor Services, Inc.
462 Delaware Ave
Palmerton Pa 18071

610-826-9117 work
610-826-9188 fax
610-349-0913 cell
610-377-6012 home

psteinmetz@xxxxxxxxxx
http://www.pencor.com/

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