APAR status
Closed as program error.
Error description
MQ APAR 'IT33901 : Performance degradation when using extended message selection' addresses a performance issue observed with Content Based Filtering. https://www.ibm.com/support/pages/apar/IT33901 By default Content Based Filtering engine attempts maximum 6 times with an wait interval of 5 seconds ie total 30 seconds to get filter evaluation requests from MQ side and this value is not configurable. Even after applying the MQ APAR IT33901, it may be required to change the wait time from its default 30 seconds to improve the performance of extended message selection.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: All users of IBM App Connect Enterprise V11.0 and V12.0 and IBM Integration Bus V10.0 using Content based filtering. Platforms affected: z/OS, MultiPlatform **************************************************************** PROBLEM DESCRIPTION: MQ APAR 'IT33901 : Performance degradation when using extended message selection' addresses a performance issue observed with Content Based Filtering. https://www.ibm.com/support/pages/apar/IT33901 By default Content Based Filtering engine attempts <span style="background-color:rgb(255, 255, 255)">to get filter evaluation requests from MQ side a</span> maximum 6 times with an wait interval of 5 seconds in between attempts ( ie total 30 seconds). This value is not configurable. If running with an MQ version which is affected by MQ APAR <span style="background-color:rgb(255, 255, 255)">IT33901 this may not be enough time to wait for data.</span> Even after applying the MQ APAR IT33901, it may be required to change the wait time from its default 30 seconds to improve the performance of extended message selection.
Problem conclusion
The product now introduces an environment variable 'MQSI_CBF_MAX_GET_ATTEMPTS' to configure the number of times the Content Based Filtering engine attempts to get a filter work requests from MQ so that the maximum time it waits for a request can be increased or decreased. For example, setting the value to '12' makes the Content Based Filtering engine to wait maximum 60 seconds for a work request. export MQSI_CBF_MAX_GET_ATTEMPTS=12 --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v10.0 10.0.0.26 v11.0 11.0.0.16 v12.0 12.0.4.0 The latest available maintenance can be obtained from: http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041 If the maintenance level is not yet available,information on its planned availability can be found on: http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT33935
Reported component name
INTEGRATION BUS
Reported component ID
5724J0540
Reported release
A00
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-08-18
Closed date
2022-04-22
Last modified date
2022-04-22
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
INTEGRATION BUS
Fixed component ID
5724J0540
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSNQK6","label":"IBM Integration Bus"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.0"}]
Document Information
Modified date:
23 April 2022