APAR status
Closed as program error.
Error description
An IBM MQ classes for JMS application: - Creates a MessageListener from a non-transacted JMS Session or Context. - Then uses the MessageListener to consume non-persistent messages. When the application is run using the IBM MQ V9.1.0.0 classes for JMS, the time taken for the MessageListener to process messages is slower than when using the MQ v8.0.0.5.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: This issue affects users of: - The IBM MQ V8.0.0.6 (or later) classes for JMS. - The IBM MQ V9.0.0.1 (or later) classes for JMS. - The IBM MQ V9.1 classes for JMS. who have applications that: - Create a MessageListener from a non-transacted JMS Session or Context. - Use that MessageListener to consume non-persistent messages. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: APAR IV78400 made some changes to the IBM MQ classes for JMS to resolve issues that would occur if an application processed messages where the MQMD and the RFH2 headers for the messages had conflicting values for the message persistence property. As a result of these changes, the IBM MQ classes for JMS would incorrectly assume that all non-persistent messages that were delivered to an asynchronous MessageListener were processed within a transaction. This caused the IBM MQ classes for JMS to always flow an MQCMIT API call to the queue manager after a MessageListener had processed a message, regardless of whether the message was processed within a transaction or not.
Problem conclusion
To resolve this issue, the IBM MQ classes for JMS have been updated to only flow an MQCMIT call to the queue manager if a MessageListener successfully processes a message within a transaction. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.13 v9.0 LTS 9.0.0.8 v9.1 LTS 9.1.0.4 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IT28817
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7271
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-04-16
Closed date
2019-07-04
Last modified date
2019-07-04
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
IBM MQ BASE MP
Fixed component ID
5724H7271
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
04 July 2019