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MF61796 - LIC-UNPRED LDCONFIG Advanced Analysis macro buffer size

PTF ( Program Temporary Fixes ) Cover letter


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Abstract

LIC-UNPRED LDCONFIG Advanced Analysis macro buffer size


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.

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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

-----------------------------------------------
The LDCONFIG Advanced Analysis macro accepts values for maximum
buffer size that can cause unpredictable results from save or
restore operations.

Some possible symptoms include:
Tolerated Exception VL04030030 for task LDIOM
MSGCPF383A RCC50B
Hang

CORRECTION FOR APAR MA45493 :
-----------------------------
The LDCONFIG macro will be updated to accept only values 0 - 48
for maximum buffer size.

CIRCUMVENTION FOR APAR MA45493 :
--------------------------------
Use the LDCONFIG Advanced Analysis macro to reset the maximum
buffer size to an acceptable value.

To reset all fields to default values:
LDCONFIG -R

To reset only the maximum buffer size:
LDCONFIG -B n
where n is a value from 0 to 48


Activation Instructions


None.




Special Instructions


********************************************************************
THE FOLLOWING ARE SUPERSEDED SPECIAL INSTRUCTIONS. IF THE SUPERSEDED
PTF HAS ALREADY BEEN APPLIED AND ITS SPECIAL INSTRUCTION FOLLOWED,
IT IS NOT NECESSARY TO FOLLOW THAT SPECIAL INSTRUCTION AGAIN.
********************************************************************

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF59730 :
=================================================

An Advanced Analysis macro named LDCONFIG is provided to allow a user
to display or change some Load/Dump performance attributes. Adjusting
the attribute values may improve the performance of save and restore
operations.

To use the LDCONFIG macro, follow these steps:
1. Access System Service Tools by using SST or DST.
2. Select Start a service tool.
3. Select Display/Alter/Dump.
4. Select Display/Alter storage.
5. Select Licensed Internal Code (LIC) data.
6. Select Advanced analysis. (You must page down to see this option.)
7. Page down until you find the LDCONFIG command. Then, place a 1
(Select) next to the command and press Enter. You are now on the
Specify Advanced Analysis Options window. The command shows as
LDCONFIG.
8. Enter the appropriate option and any required parameters in the
Options field. For example:
o Enter -h  to display the available options.
o Enter -d  to display the current values.
o Enter -a path on  to enable task affinity for ObjectConnect
operations.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF59730      LIC-PERFM High CPU in LD* tasks for SAVRSTLIB

Summary Information

System.............................. i
Models..............................
Release............................. V7R2M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA45493
Superseded by:......................
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C6306720


System i Support

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Document information

More support for: i family

Software version: V7R2M0

Operating system(s): OS/400

Reference #: MF61796

Modified date: 31 March 2016