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DB2 - Problem description

Problem IT22626 Status: Closed

LOAD IN ENCRYPTED DATABASE WILL LEAK SOME ENCRYPTION RELATED MEMORY BLOCKS

product:
DB2 FOR LUW / DB2FORLUW / B10 - DB2
Problem description:
The size of the blocks will depend on the platform and will not 
show up in 'db2pd -memblocks'. 
 
However using a simple debugger script to catch malloc/free 
calls you will be able to detect those blocks. 
A regular pmap/procmap/svmon would as well over time, depending 
on the activity, show the heap 
growing for the db2sysc process. 
 
With a debugger script you should see that the blocks left 
around are coming from below 
function 'cryptAllocateCachedMemory()'. Each load related EDU 
will leak about 4 or 5 small 
size blocks. 
 
This issue only applies to encrypted databases.
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to Db2 11.1 Mod 3 Fix Pack 3 or higher               * 
****************************************************************
Local Fix:
available fix packs:
Db2 Version 11.1 Mod 3 Fix Pack 3 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows

Solution
First fixed in Db2 11.1 Mod 3 Fix Pack 3
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
02.10.2017
19.03.2018
19.03.2018
Problem solved at the following versions (IBM BugInfos)
Problem solved according to the fixlist(s) of the following version(s)