DB2 FOR LUW / DB2FORLUW / 970 - DB2

If a memory allocation error occurs whilst a data descriptor, an 
internal structure used for data encapsulation within DB2, is 
being 
copied it is possible that uninitialised content is picked up 
and 
used when the partial copy is freed, leading to a crash. 
 
As the uninitialised data will vary, exact symptoms of the crash 
will vary too however the faulting stack should contain the 
function 
sqlofmblkEx called by sqlddFreeDD, for example: 
=========================================== 
  [0] 0x090000000631D6B8 pdLog + 0x88 
  [1] 0x09000000074466AC @78@sqloDiagnoseFreeBlockFailure__... + 
0xEC 
  [2] 0x09000000074464F0 sqloDiagnoseFreeBlockFailure__... + 
0x78 
> [3] 0x09000000060CFBF8 sqlofmblkEx + 0x80 
> [4] 0x09000000062F123C sqlddFreeDD__FPP14dataDescriptor + 0x9C 
  [5] 0x0900000006D08060 sqluFreeCrossCBMemory__... + 0x2B4 
  [6] 0x0900000006D06F2C iCleanUp__... + 0x520 
[...] 
=========================================== 
 
This APAR will ensure data descriptor memory is correctly 
initialised when allocated.

**************************************************************** 
* USERS AFFECTED:                                              * 
* All users of version 9.7 on Linux, Unix and Windows          * 
* platforms.                                                   * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Update to DB2 LUW Version 9.7 Fix Pack 9 or higher levels.   * 
****************************************************************

N/A

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
 

First fixed in DB2 LUW Version 9.7 Fix Pack 9.

not known / see Local fix

Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

04.03.2013
16.12.2013
16.12.2013

9.7.FP9