APAR status
Closed as program error.
Error description
A small timing window exists with the potential for message loss or duplication if sender channel disconnects abnormally and reconnects during commit processing, for example due to network disruption or a forceful termination of the sender channel process.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users sending persistent messages, or non-persistent messages with NPMSPEED(NORMAL) on a channel between two queue managers are potentially affected. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: A timing condition exists where an abnormal termination of a channel and subsequent channel retry could lead to loss of integrity to the transaction used to move a batch of messages from the transmission queue on one queue manager to the target queue manager, as a consequence messages in a batch could be lost or duplicated.
Problem conclusion
Logic has been added to channels to ensure that the internal resources that are used to track the transaction used to transfer a batch of messages maintain consistency. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.12 v9.0 LTS 9.0.0.6 v9.1 CD 9.1.2 v9.1 LTS 9.1.0.2 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
IT27810
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-01-18
Closed date
2019-03-27
Last modified date
2019-04-02
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
5724H7251
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":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
02 April 2019