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DB2 - Problembeschreibung

Problem IC79260 Status: Geschlossen

DB2 MAY NOT PERFORM OPTIMALLY ON LARGE 64-BIT WINDOWS ENVIRONMENTS DUE TO
USE OF MEM_TOP_DOWN FLAG

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
DB2 uses the MEM_TOP_DOWN flag for many memory allocations 
(VirtualAlloc API) on the Windows platform.  The use of this 
flag causes memory allocations to take longer as the number of 
allocations gets larger.  The MEM_TOP_DOWN flag is used 
primarily to avoid address space fragmentation in 32-bit 
environments, and is not needed with 64-bit, so its use will be 
restricted to 32-bit DB2. 
 
The symptom may be particularly noticable when initializing 
large bufferpools. 
 
A workaround exists, that is to set the following internal 
registry variable: 
  db2set DB2_MEMALLOCATE_HIGH=NO 
The instance must be recycled with db2stop; db2start
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* DB2 running in large Windows environments                    * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.7 Fix Pack 6                        * 
****************************************************************
Local-Fix:
db2set DB2_MEMALLOCATE_HIGH=NO 
The instance must be recycled with db2stop; db2start
verfügbare FixPacks:
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
Problem first fixed in DB2 Version 9.7 Fix Pack 6
Workaround
See Local Fix
Bug-Verfolgung
Vorgänger  : APAR is sysrouted TO one or more of the following: IC84204 
Nachfolger : 
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
18.10.2011
12.06.2012
12.06.2012
Problem behoben ab folgender Versionen (IBM BugInfos)
9.7.FP6
Problem behoben lt. FixList in der Version
9.7.0.6 FixList