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DB2 - Problembeschreibung

Problem IC87449 Status: Geschlossen

POTENTIAL SLOW LOAD PERFORMANCE WITH MDC/RP TABLE AND GPFS DUE TO
MISALIGNED MEMORY BUFFER

Produkt:
DB2 FOR LUW / DB2FORLUW / A10 - DB2
Problembeschreibung:
When running DB2 LOAD operations into MDC and/or Range 
Partitioned tables that reside on GPFS file system, we might see 
slow performance together with high GPFS CPU usage.  This is 
caused by some LOAD code using "non-aligned memory buffer" to do 
GPFS Direct I/O. 
 
(Similar code problem potentially exists for regular (non-MDC 
and non-RP) tables, but to a much smaller extent; in practice 
there should be negligible performance issue with regular 
tables.)
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* LOAD + GPFS users                                            * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 10.1 Fix Pack 2.                      * 
****************************************************************
Local-Fix:
verfügbare FixPacks:
DB2 Version 10.1 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows

Lösung
Problem was first fixed in DB2 Version 10.1 Fix Pack 2.
Workaround
keiner bekannt / siehe Local-Fix
Bug-Verfolgung
Vorgänger  : APAR is sysrouted TO one or more of the following: IC88218 
Nachfolger : 
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
23.10.2012
31.12.2012
31.12.2012
Problem behoben ab folgender Versionen (IBM BugInfos)
Problem behoben lt. FixList in der Version
10.1.0.2 FixList
10.5.0.2 FixList