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DB2 - Problembeschreibung

Problem IC92599 Status: Geschlossen

PRIVATE MEMORY LEAK ON THE DB2 SERVER BY THE DB2PFCHR THREAD

Produkt:
DB2 FOR LUW / DB2FORLUW / A10 - DB2
Problembeschreibung:
db2sysc process will increase in memory consumption over time. 
 
db2 private memory leak is observed within the db2pfchr thread. 
db2pd -memset output will show the 
committed size keep increasing over time for the private memory 
set. 
 
db2 select MEMORY_POOL_TYPE, MEMORY_POOL_ID, APPLICATION_HANDLE, 
 
EDU_ID, MEMORY_POOL_USED, MEMORY_POOL_USED_HWM from 
 
table"(mon_get_memory_pool('PRIVATE',null,null))" 
 
will show the max private memory is consumed by the edu threads 
corresponding to the db2prefchr threads. 
 
e.g. 
MEMORY_POOL_TYPE                 MEMORY_POOL_ID 
APPLICATION_HANDLE   EDU_ID               MEMORY_POOL_USED 
MEMORY_POOL_USED_HWM 
-------------------------------- -------------------- 
-------------------- -------------------- -------------------- 
-------------------- 
PERSISTENT_PRIVATE                                 86 
-                    0             17956864             25427968 
PRIVATE                                            88 
-                 7455              8454144              8519680 
PRIVATE                                            88 
-                 7712              7864320              7864320 
PRIVATE                                            88 
-                 7969              6881280              6881280 
 
db2pd -memblocks pid=<db2sysc pid> will show the LOC as follows: 
Memory blocks sorted by size: 
 
PoolID     PoolName   TotalSize(Bytes)     TotalCount LOC   File 
 
0                     248320000            12125      1231 
1480119721 
 
The leak is due to incorrect memory deallocation by the 
db2prefchr thread.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* See Error Description                                        * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 10.1 for Linux, UNIX, and Windows Fix * 
* Pack 3                                                       * 
****************************************************************
Local-Fix:
verfügbare FixPacks:
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 first fixed in DB2 Version 10.1 for Linux, UNIX, and 
Windows Fix Pack 3
Workaround
keiner bekannt / siehe Local-Fix
Bug-Verfolgung
Vorgänger  : APAR is sysrouted TO one or more of the following: IC95365 
Nachfolger : 
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
24.05.2013
24.10.2013
24.10.2013
Problem behoben ab folgender Versionen (IBM BugInfos)
Problem behoben lt. FixList in der Version
10.1.0.3 FixList
10.1.0.3 FixList