Date: Wed, 20 Aug 1997 12:37:42 EDT
Reply-To: CICS List <CICS-L@UGA.CC.UGA.EDU>
Sender: CICS List <CICS-L@UGA.CC.UGA.EDU>
From: "Rajeev P. Dhanawade" <rdhanawade@STATE.DE.US>
Subject: Re: MVS Dump from CICS region.
Content-type: text/plain; charset=us-ascii
Hi Christopher,
Thanks for your helpful tips. My thanks also to Ed Green, Chris McFadden
and Rhichard Tsujimoto. The MXT value for our region is 32. Most of the
time the programs are debugged using XPED. Whenever a program is called
from the client a PL/1 program is invoked which performs the LU
conversation with a hub (Netwise). This program acquires memory by doing a
getmain and puts all the commarea information there and links with that
address to the application program.
We had the CICS go under stress within an hour of it being re-cycled. If
you could just tell me the nature of information you are looking for in
order to enable you to help me I would really appreciate it and instantly
pass it on.
Thanks a mil.
Rajeev P Dhanawade
Phone : 302-577-4659 Ext. 324 ++ Fax : 302-577-4454 ++ Voice Mail :
1-888-472-9119 Ext. 3419
****** Please note that my extension has changed from 237 to 324 ******
-------------
Original Text
From: "Christopher Frank" <FAdvice@AOL.COM>, on 8/19/97 11:32 PM:
In a message dated 97-08-19 17:52:00 EDT, you write:
<< Our environment is CICS 4.1 & DB2 V4 with VS-Cobol and Xpediter. We are
experiencing a problem with CICS producing MVS dumps and the volumes
getting full. We are in the development phase so we have our share of
ASRAs
and the like. We have a real need to get these dumps under control. Any
helpful
suggestions and pointers would be greatly appreciated. Also I would like
to know if frequent MVS dumps would require us to re-cycle CICS
frequently.
>>
Have you created a system dump table entry to suppress AP0001 dumps? The
default for an ASRA transaction abend is to take an AP0001 system dump
unless
you specifically suppress it. You can do this with CEMT or EXEC CICS SET
commands in a PLT program.
If OSCOR is very limited, frequent MVS dumps COULD require you to re-cycle
CICS frequently. But, cure the symptoms, cure the disease.
<< We are also facing a problem of CICS running out of space
above the 16 MB line frequently. The region is configured with 8MB below
and 35 MB above.
>>
You did not supply enough information to determine these numbers are large
enough, but I can tell you that there are many shops running with
significantly more than 35mb above the line. Why not raise it and see if
your
problem goes away? If you choose to do so, be sure your IEFUSI exit will
permit it.
Otherwise, lower MXT to reduce your virtual storage requirements.
Regards,
Christopher Frank
STAR Technologies
Minneapolis, MN
