APAR status
Closed as program error.
Error description
An alias queue manager is defined with an MQTT client ID, here is an example: DEFINE QREMOTE(MQTT_MY_CLIENT_ID) + RQMNAME(MQTT_MY_CLIENT_ID) + XMITQ(SYSTEM.MQTT.TRANSMIT.QUEUE) When the MQTT application starts for the first time, a durable subscription is created and the destination queue is set to SYSTEM.MQTT.TRANSMIT.QUEUE as expected. When the application restarts, the durable subscription is altered with destination equal to SYSTEM.MQTT.PUBLICATION.QUEUE and the application can no longer consume messages, receiving MQRC_UNKNOWN_REMOTE_Q_MGR.
Local fix
The destination queue in the subscription can be altered with the correct queue name: ALTER SUB('sub_name') DEST('expected_mqtt_xmitq')
Problem summary
**************************************************************** USERS AFFECTED: Users of MQXR on a version of IBM MQ containing APAR IT30843 and who do not use a DEFXMITQ of SYSTEM.MQTT.TRANSMIT.QUEUE may be affected by this problem. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: A coding error in APAR IT30843 meant that an MQOPEN request failed to look locally for an object if called by the MQXR server.
Problem conclusion
The code was corrected to ensure a local object lookup takes place during an MQOPEN if the calling application is the MQXR server. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.17 v9.0 LTS 9.0.0.12 v9.1 LTS 9.1.0.10 v9.2 LTS 9.2.0.4 v9.x CD 9.2.4 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
IT36047
Reported component name
MQ BASE V9.2
Reported component ID
5724H7281
Reported release
920
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-02-26
Closed date
2021-08-12
Last modified date
2021-08-12
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
MQ BASE V9.2
Fixed component ID
5724H7281
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"920"}]
Document Information
Modified date:
13 August 2021