APAR status
Closed as program error.
Error description
When MQ returns a failure return code, the error is logged and control is passed back to MQ. This results in a loop where MQ continually returns a failure, filling the error logs of both applications.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: All users of IBM Integration Bus using the MQGet node. Platforms affected: z/OS, MultiPlatform **************************************************************** PROBLEM DESCRIPTION: When using the MQGet node, some return codes from MQ can result in an infinite loop where control is continually passed between IIB and MQ without any changes occurring to the operation to cause the loop to progress/end. There are a number of resource name changes between WebSphere Message Broker and IBM Integration Bus Version 9.0. For details visit http://pic.dhe.ibm.com/infocenter/wmbhelp/v9r0m0/topic/com.ibm.e tools.mft.doc/bb23814_.htm
Problem conclusion
When a message is received on the MQ connector, previously if no message was available, control would be passed back to MQ immediately. This has been removed to allow all return code checking to take place inside the callback. In the callback, if a message MQRC is not MQCC_OK or MQCC_WARNING, the callback process is always ended, preventing control being passed back to MQ without the problem being fixed. This was causing the infinite loop as MQ would repeatedly send an error to the broker, and no changes would be made before control was passed back, meaning the same error would be sent again etc. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v10.0 10.0.0.9 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
IT19247
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
2017-02-14
Closed date
2017-05-25
Last modified date
2017-05-25
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
RA00 PSY
UP
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Document Information
Modified date:
23 March 2020