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DB2 - Problem description

Problem IC61458 Status: Closed

Memory is leaked when an EDU for unfenced store procedure terminates

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problem description:
Small memory buffer, related to the thread control block , is 
leaked when a db2 agent terminates. 
The memory leak happens only for the agents, executing unfenced 
store 
procedures. 
The leaked memory area can be reused by DB2 if OS creates new 
threads with reused thread ID. 
 
The leaked memory would be released when libdb2e.so library is 
unloaded from the DB2 engine ( db2sysc process )
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* all platforms                                                * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* The memory is leaked when db2 agent, executing unfenced      * 
* store procedure , terminates. A DB2 agent terminates when    * 
* number of agents exceeds the number of max pool agents       * 
* (NUM_POOLAGENTS) . The memory is released when the last      * 
* application, executing an unfenced store procedure ,         * 
* disconnects and libdb2e.so is unloaded.                      * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 V95FP5                                        * 
****************************************************************
Local Fix:
Disconnect all applications , running unfenced stored 
procedures
available fix packs:
DB2 Version 9.5 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Solution
After installation of DB2 V95FP5 the problem would be resolved. 
No additional behavior changes would be seen.
Workaround
not known / see Local fix
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC63993 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
10.06.2009
09.03.2010
09.03.2010
Problem solved at the following versions (IBM BugInfos)
9.5.FP5
Problem solved according to the fixlist(s) of the following version(s)
9.5.0.5 FixList