DB2 FOR LUW / DB2FORLUW / 970 - DB2

Setting of service class agent priority and outbound correlator 
is designed to be mutually exclusive.  The user either uses 
agent priority to control the CPU usage of a service class or 
they use OS WLM (AIX WLM or Linux WLM) using outbound correlator 
tag. 
A bug was discovered that allows a user to set the outbound 
correlator for a service superclass and set agent priority for 
a service subclass.  This configuration may lead to problems 
withproportioning CPU shares between this service subclass and 
   other service subclasses under the service superclass.  A 
change has been made to prevent this setup in the 
CREATE/ALTER SERVICE CLASS DDL.  This problem was introduced in 
V9.5. 
 
 
What happens if we don't fix this problem? 
If a user creates the scenario described 
above,  the CPU usage behaviour may be 
unpredictable.  The  workaround is 
for the user to fix      their service class attributes so that 
they either use agent priority or outbound correlator  with OS 
WLM. 
 
The fix will stop this scenario from  ever being able to happen. 
 
The fix is a low risk fix.

**************************************************************** 
* USERS AFFECTED:                                              * 
* WLM users using service class agent priority and/or OS WLM   * 
* integration                                                  * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* The service class agent priority attribute and outbound      * 
* correlator attribute are designed to be mutually exclusive.  * 
* The user either specifies the agent priority to control the  * 
* CPU usage of a service class or they specify the outbound    * 
* correlator to use OS WLM.  A bug was discovered that allows  * 
* a user to set the outbound correlator for a service          * 
* superclass and the agent priority for a service subclass.    * 
* This configuration may lead to problems with proportioning   * 
* CPU shares between this service subclass and other service   * 
* subclasses under the service superclass.  A change has been  * 
* made to prevent this setup in the CREATE/ALTER SERVICECLASS  * 
* DDL.                                                         * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Update service class configuration to ensure there are no    * 
* cases with                                                   * 
* - agent priority set at the service superclass and outbound  * 
* correlator set at one of the service superclass' subclasses  * 
*                                                              * 
* - outbound correlator set at the service superclass and      * 
* agent priority set at one of the service superclass'         * 
* subclasses                                                   * 
****************************************************************

Update service class configuration to ensure there are no cases 
with 
- agent priority set at the service superclass and outbound 
correlator set at one of the service superclass' subclasses 
- outbound correlator set at the service superclass and agent 
priority set at one of the service superclass' subclasses

DB2 Version 9.7 Fix Pack 1 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
 

The fix is to prevent a user from setting agent priority for a 
service superclass and outbound correlator for one of its 
service subclasses (and vice versa).  The fix will be available 
in V9.7 FP1.

keiner bekannt / siehe Local-Fix

Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:

13.11.2009
27.04.2010
27.04.2010

9.7.FP1