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DB2 - Problembeschreibung

Problem IC65597 Status: Geschlossen

POSSIBLE PERFORMANCE ISSUE RELATED TO TABLE QUEUE PERFORMANCE AND TABLE
QUEUE SPILLING

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
In a DPF environment, and/or if INTRA_PARALLEL dbm cfg 
parameter is turned on, queries may involve multiple db2 
agents to execute them.  Sometimes, rows need to be sent and 
received on table queues, the mechanism for flowing rows 
between agents via FCM functionality. 
The logic for sending and receiving involves a flow control 
mechanism for regulating the flow of rows between senders and 
receivers.  Part of this logic uses in internal timing delay 
which gets calculated dynamically. 
This fix will ensure the timing delay calculations are more 
accurate, which may improve performance with respect to table 
queues and table queue spilling. 
If snapshots are showing a lot of table queue spilling, this 
APAR might help reduce table queue spilling, depending on the 
situation.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* DPF and/or SMP                                               * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* POSSIBLE PERFORMANCE ISSUE RELATED TO TABLE QUEUE            * 
* PERFORMANCE AND TABLE QUEUE SPILLING.                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to db2 v9.1 FP8                                      * 
****************************************************************
Local-Fix:
non
verfügbare FixPacks:
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
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 9a 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 10 for Linux, UNIX, and Windows

Lösung
First fixed in v9.1 FP8.
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
15.01.2010
12.07.2010
12.07.2010
Problem behoben ab folgender Versionen (IBM BugInfos)
9.1.FP8
Problem behoben lt. FixList in der Version
9.7.0.2 FixList