PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
OSP-DB-OTHER FILE WITH AUX SPACE BECOMES DAMAGED.
Pre/Co-Requisite PTF / Fix List
REQ LICENSED PTF/FIX LEVEL
TYPE PROGRAM RELEASE NUMBER MIN/MAX OPTION
---- -------- --------- ------- ------- ------
PRE 5770999 V7R2M0 MF59242 00/00 0000
CO 5770999 V7R2M0 MF58264 00/00 0000
CO 5770999 V7R2M0 MF58265 00/00 0000
CO 5770999 V7R2M0 MF57744 00/00 0000
CO 5770999 V7R2M0 MF57745 00/00 0000
CO 5770999 V7R2M0 MF59665 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
-----------------------------------------------
When a file contains large variable length fields (BLOB, CLOB,
etc) and there is one or more jobs reading from the file at the
same time one or more jobs are inserting into the end of the
file, it is possible that one of the reader jobs may detect a
mismatch between the fixed length portion of the record and the
variable length portion of the record. This occurs because, in
rare instances in the insert path, the code determines that it
needs to extend an internal structure housing location
information. Unfortunately the serialization used when
extending this structure is not sufficient enough to prevent a
reader job from seeing the structure in flux, thus causing the
mismatch. This results in a read error, a 0600 5EED vlog, and
the file being marked damaged. Although in actually, if the
read is tried again to the same record, it will be successful.
It should be noted that no data is lost or corrupted and all
records can be read successfully and correctly once the internal
structure is no longer in flux. The file is not actually
damaged and was marked damage in error.
CORRECTION FOR APAR MA46475 :
-----------------------------
This PTF enforces more strict serialization when these internal
structures are being extended so that NO other job or task will
see the structures while they are in flux, thus a reader job
would neve find the structure in flux and would find the correct
VL data.
As noted in the problem description When the structure is not in
flux, all reads are correct and successful. The file was marked
damaged in error. However, this PTF will NOT unmark the file.
Service must be contacted to have the damage indication
reversed.
CIRCUMVENTION FOR APAR MA46475 :
--------------------------------
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
-------------- ------------------------------------------------------------
MF63256 LIC-DB performance improvement accessing force bitmap
MF63036 LIC-DB excessive 06004C31 vlogs
MF62920 OSP-F/#DBUPDIM-T/QDBUDR-MSGMCH4801 APPLY JOB FAILS WITH MCH4
MF62875 OSP-DB Database Initialization (SLIC) IPL/Vary-on step perfo
MF62809 OSP-DB A JOB MAY CREATE MANY THREADS (THOUSANDS) IF CQE USES
MF62694 OSP SLIC DB vary-on diagnostics
MF62538 OSP-DB SLIC DB Internal Maintenance for LOB processing of Au
MF62276 LIC-DB Future release compatibility changes
MF62266 LIC-DB Future release compatibility changes
MF61858 OSP-DB Performance scaling (cache line) #dbscblk
MF61603 OSP-DB Performacne scaling (cache line) #dbreten
MF60500 OSP-PERFM LARGE AMOUNTS OF READS ON FILE CAN CAUSE EXCESSIVE
MF57748 LIC-DB Prevent masked constraint Enablement
MF59003 LIC-DB-OTHER-WAIT LONG SEIZE HOLD ON CQE QUERY
MF58262 OSP-DB-OTHER-T/QTNDTCOBX/01E8-MSGMCH6204 RPGSQL PGM FAILS WI
MF57845 LIC-DB DBL3 tasks causing seize contention
MF62265 OSP-PAR B6001215
MF61465 LIC-DB-OTHER-SRCB6005121-UNPRED SYSTEM HALT DURING NORMAL OP
MF61372 OSP-DB Database Create Temp OMLOBB Data Space Improvements
MF61164 OSP-DB-OTHER-THREADS-PERFM RESTORE FAILS WITH MCH1604
MF61008 LIC-DB Reduce DB Recovery time on vary-on after flash copy
MF60886 LIC-DB Force recycled Aux pieces at close
MF60838 OSP-F/#DBDELIM-T/QDBUDR-RC1716-MSGMCH3203 RGZPFM WITH ALWCAN
MF60711 LIC-DB VL06005EED for very large files
MF60612 LIC-DB 06005D60 vlogs during massive delete of records
MF60466 OSP-INCORROUT WHEN INTERNAL STRUCTURES ARE INCORRECT AND DEL
MF60262 LIC-DB Prevent Performance issue caused by repeated rebuild
MF59833 OSP-MSGCPF8111 WHEN SAVING A FILE AFTER UPGRADE TO 7.2, FILE
MF59668 LIC-DB Set last used VL storage at IPL.
MF59619 OSP-DB-OTHER-F/#DBGETAX-T/QDBPUT-MSGMCH3203 A MSGMCH3203 MAY
MF59611 OSP-MSGCPF8111 PARTIAL DAMAGE ON FILE MEMBER WHEN PERFORMING
MF59333 LIC-DB Prevent rebuild of internal recycle index
MF58535 LIC-DB LOG 06005D60 vlogs
MF57837 LIC-DB V720. Backup is (either) hung or taking exccessively
MF59252 OSP-DB looping QClnSysLog job in database I/O (delete operat
MF62201 OSP-DB Internal performance improvements for cpyf, alter tab
MF61363 OSP-DB Database Insert Processing Improvements
MF61325 OSP-DB-MSGMCH3402 F/T stringHighUse/QDBFEOD is returned when
MF60721 OSP-DB-OTHER-F/#DBGETAXX/1716-T/QDBPUTMX/0702-MSGMCH3203 ALT
MF59709 OSP-DB-OTHER-F/DBMAPV2F-T/QDBUDR-MSGMCH3203 A MSGMCH3203 MAY
MF59670 OSP DB MCH3203 f/#dbentad t/QDBPUT with VL02001716 from #dbe
MF59601 OSP DB MCH3203 f/#dbentad t/QDBPUT with VL02001716 from #dbe
MF59296 OSP-DB-OTHER-INCORROUT A SAVE-WHILE-ACTIVE WHILE A RGZPFM IS
MF58263 OSP- CPF5079 Number of locks under commit in job exceeds lim
MF58040 OSP- Internal maintenance
MF57987 OSP-DB-OTHER-UNPRED SELECT FROM INSERT STATEMENT CAUSES INDE
MF57746 LIC-DB Prevent masked constraint Enablement
Summary Information
System.............................. | i |
Models.............................. | |
Release............................. | V7R2M0 |
Licensed Program............... | 5770999 |
APAR Fixed.......................... | View details for APAR MA46475 |
Superseded by:...................... | View fix details for PTF MF69499 |
Recompile........................... | N |
Library............................. | QSYS |
MRI Feature ........................ | NONE |
Cum Level........................... | C7290720 |
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Modified date:
23 February 2022