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DB2 - Problembeschreibung

Problem IC74696 Status: Geschlossen

FOR TABLESPACES WITH "NO FILE SYSTEM CACHE" ENABLED AND NO CONCU
RRENT I/O AVAILABLE, DIRECT I/O WILL NOT ALWAYS BE ATTEMPTED.

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
When tablespaces are created with the "no file system cache" 
attribute, then DB2 will attempt to use Concurrent I/O ( CIO ) 
on the containers of that tablespace. In some cases, when CIO is 
not available on the system, then DB2 will incorrectly not 
attempt to use Direct I/O ( DIO ) even though that may be 
available in some cases. 
Db2 will instead fall back to using the file system cache for 
I/O on those tablespaces. 
This could have an impact on performance.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* all                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* DB2 file access not using DIO when CIO is not available.     * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 V9.7 Fix Pack 5                               * 
****************************************************************
Local-Fix:
n/a
verfügbare FixPacks:
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Lösung
The problem has first been fixed in V9.7 Fix Pack 5
Workaround
keiner bekannt / siehe Local-Fix
Bug-Verfolgung
Vorgänger  : APAR is sysrouted TO one or more of the following: IC74760 
Nachfolger : 
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
25.02.2011
22.12.2011
22.12.2011
Problem behoben ab folgender Versionen (IBM BugInfos)
9.7.FP5
Problem behoben lt. FixList in der Version
9.7.0.5 FixList