DB2 FOR LUW / DB2FORLUW / B50 - DB2

This issue is specific to Db2 running under Windows operating
system only and with version 11.1 mod 4 fix pack 4 and v11.5 GA
(Fixpack 0). When a EDU
is released from serving an application it will leak a private
memory block. Depending on the configuration and number of
connections coming in/out the leak might grow rather quickly.

The type of blocks leaked will be visible in a "db2fodc -memory"
output file "db2pd.memblocks.private". In this file, the persist
pool of the private memory will be the main consumer with a
large count of blocks:

...
Total size for persist pool: 7673057192 bytes (PoolID: 86,
SecondID: 0, PoolAddr: 0x000001504C280498)
Total size for Private memory set: 7673668136 bytes

All memory consumers in Private memory set:
PoolAddr          PoolID    PoolName  SecondID
TotalSize(Bytes)    %Bytes TotalCount %Count  LOC  File
0x000001504C280498 86        persist   0
7663597408          99.87 216388      99.43  476  4284367586
0x000001504C280498 86        persist   0
6549088             0.09  52           0.02  196  1235720678
0x000001504C280498 86        persist   0
1159264             0.02  490          0.23  244  4283993058
0x000001504C280498 86        persist   0
786432              0.01  6            0.00 5176  745254192
...

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* USERS AFFECTED:                                              *
* Db2 running on Windows environment only                      *
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* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
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* RECOMMENDATION:                                              *
* upgrade to Db2 version 11.1 mod 4 fp5                        *
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not known / see Local fix

forerunner  : IT28248 
follow-up : 

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

31.10.2019
31.10.2019
22.05.2020