My health check says the same, of course.

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf 
Of Skip Robinson
Sent: Wednesday, June 26, 2013 10:28 AM
To: [email protected]
Subject: Re: XCF MAXMSG

The text of health check XCF_DEFAULT_MAXMSG says this:

CHECK PARM: 2000 

IXCH0426I The XCF transport class MAXMSG value is currently equal to or larger 
than the owner specified value 2000. 

.
.
JO.Skip Robinson
Southern California Edison Company
Electric Dragon Team Paddler
SHARE MVS Program Co-Manager
626-302-7535 Office
323-715-0595 Mobile
[email protected]



From:   Mark Zelden <[email protected]>
To:     [email protected], 
Date:   06/26/2013 07:20 AM
Subject:        Re: XCF MAXMSG
Sent by:        IBM Mainframe Discussion List <[email protected]>



On Wed, 26 Jun 2013 08:59:27 -0400, Richards, Robert B. 
<[email protected]> wrote:

>Okay, I am feeling little dense this morning/week.
>
>I am trying to decode how to determine the best value to set for MAXMSG. 
Having read and re-read applicable sections of "Setting Up A Sysplex", I 
am still not "getting it".
>
>Reason for being there? From the SR:
>
>EZZ4338I ERROR REPORTED ON INTERFACE EZ6XCFID - CODE 80100044
>DIAGNOSTIC CODE 03
>EZZ4310I ERROR: CODE=80100044 REPORTED ON DEVICE VTAMF. DIAGNOSTIC
>CODE: 03
>EZZ4337I ATTEMPTING TO RECOVER INTERFACE EZ6XCFID
>EZZ4309I ATTEMPTING TO RECOVER DEVICE VTAMF
>IST1504I XCF CONNECTION WITH WDPC.VTAMF IS INOPERATIVE 664
>IST1501I XCF TOKEN = 0300013600270003
>IST1578I DEVICE INOP DETECTED FOR ISTTCDID BY ISTTSCBX CODE = 001
>IST314I END
>IST1578I SOFT INOP DETECTED FOR ISTTCDID BY ISTTSC8X CODE = 005
>.
>These messages indicate an XCF buffer shortage as described in
>Technote SWG21244665 which reads as follows:
>For ISTXCF, the MAXMSG parameter for PATHIN and PATHOUT
>should be tuned to its upper limit value.
>The higher value of MAXMSG parameter does not cause XCF
>to use more storage. Therefore, you can raise the value
>of your MAXMSG parameter to resolve this problem.
>
>Any advice on how to decode the manual and come up with a "happy value" 
would be appreciated. Which maxmsg?
>

Hi Bob,

Here is a note I have in my COUPLExx members.   The advise probably comes
from a Mark Brooks SHARE presentation or whitepaper.

/* MAXMSG should be high enough for at least 30 messages/buffers */ 
/* default MAXMSG was 750 (chg in os/390 r2 from 500)            */ 
/* default MAXMSG is currently 2000 (chg in z/os 1.7 from 750)   */ 

My MAXMSG is set to 2000 (the z/OS 1.7 default) in CLASSDEF for all 
of my transport classes.

Cheers,

Mark


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