PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
OSP-WAIT JOBS NOT ENDING WHILE IN A FLUSH SEIZE CONTENTION/L
Pre/Co-Requisite PTF / Fix List
REQ LICENSED PTF/FIX LEVEL
TYPE PROGRAM RELEASE NUMBER MIN/MAX OPTION
---- -------- --------- ------- ------- ------
CO 5770999 V7R4M0 MF66818 00/00 0000
CO 5770999 V7R4M0 MF66819 00/00 0000
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
-----------------------------------------------
A running query validates each data space record prior to
processing it. There are cases that this validation temporarily
fails due to a concurrent change. Validation then continues by
acquiring a shared seize on the containing data space to
serialize with changes. If the query happens to hold one or
more locks on other records in the file, it is possible that the
seize attempt could deadlock with a concurrent update, resulting
in neither job making progress.
CORRECTION FOR APAR MA48275 :
-----------------------------
A change was made to reduce this serialization from a data space
seize to an internal record lock, thus still providing a
consistent view for validation, while reducing the impact of the
serialization.
CIRCUMVENTION FOR APAR MA48275 :
--------------------------------
None.
Activation Instructions
None.
Special Instructions
None.
Default Instructions
THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.
Supersedes
PTF/FIX NO(S). APAR TITLE LINE
-------------- ------------------------------------------------------------
MF66817 LIC-DB-OTHER-T/QDBGETMQO-RCX'07'-MSGMCH0601 follwed by CPF52
Summary Information
System.............................. i
Models..............................
Release............................. V7R4M0
Licensed Program.................... 5770999
APAR Fixed.......................... View details for APAR MA48275
Superseded by:...................... View fix details for PTF MF70467
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C0303740
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Modified date:
10 January 2023