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MF60667 - OSP-MSGMCH1668 3270 EMULATION. CPF8105 AND CPF5274 ALONG WIT

PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

OSP-MSGMCH1668 3270 EMULATION. CPF8105 AND CPF5274 ALONG WIT


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.





APAR Error Description / Circumvention

-----------------------------------------------
3270 Emulation. When the screen buffer exceeds the allowed max
RU size (4096), slic T2 loses track of which buffer type to free
when it processes the receive REQIO for the application data.
After data is copied to the REQIO buffer, the original buffer
needs to be freed. This fix resolves the bad free heap
exception.
Messages that are being posted are MCH1668 System Object xxxxx
partially damaged, CPF8105 device description xxxx damaged, and
CPF5274 error on device for remote location xxxxx file QLEMHOST
in QSYS. VLOGS 0300 damage set and 0700 0016 source/sink are
being generated.
This fix does not resolve the problem with the screen buffer
exceeding the allowed maximum RU size (4096) but an SNA sense
code, 10020000, 'RU Length Error' may be posted instead.

CORRECTION FOR APAR MA44673 :
-----------------------------
A check is made to determine the original buffer type before
freeing it. This prevents the exception taken on freeing heap
storage and allows processing to continue.

CIRCUMVENTION FOR APAR MA44673 :
--------------------------------
None.


Activation Instructions


None.




Special Instructions


1.- Vary off all *APPN controllers using:
WRKCFGSTS *CTL *APPC
Another option is to vary off all *APPN controllers
using:
VRYCFG CFGOBJ(*APPN) CFGTYPE(*CTL) STATUS(*OFF)

2.- Vary off all *HOST controllers using:
WRKCFGSTS *CTL *HOST

3.- Close all USER type RTP sessions with command:
WRKAPPNSTS, option 2 "Work with RTP Connections".
Close all remaining RTP sessions with option 10.

4.- Install/Remove this PTF

5.- Proceed to vary *APPN controllers back on with:
WRKCFGSTS *CTL *APPC
or,
VRYCFG CFGOBJ(*APPN) CFGTYPE(*CTL) STATUS(*ON)

6.- Proceed to vary *HOST controllers back on with:
WRKCFGSTS *CTL *HOST


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
     NONE

Summary Information

System.............................. i
Models..............................
Release............................. V7R2M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA44673
Superseded by:......................
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C6127720


System i Support

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Document information

More support for: i family

Software version: V7R2M0

Operating system(s): OS/400

Reference #: MF60667

Modified date: 16 September 2015