A fix is available
APAR status
Closed as program error.
Error description
In MQ v5.3.1.11 for HP NonStop, MQGMO_LOCK has been configured to prevent duplicate message processing. Two receivers unexpectedly get same message using mqget with browse option at same time even though specifying MQGMO_LOCK option.
Local fix
Problem summary
If MQGMO_BROWSE and MQGMO_LOCK are set and the same message is browsed again, the message will be erroneously unlocked, waiters be notified and then the message locked again. This can lead to the message being delivered multiple times.
Problem conclusion
The product has been changed in a way that if the same message is being browsed again with MQGMO_LOCK being set, it will not be unlocked and waiters will not be mistakenly notified.
Temporary fix
Comments
APAR Information
APAR number
IT21970
Reported component name
WEBS MQ NSS ITA
Reported component ID
5724A3902
Reported release
531
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-08-10
Closed date
2017-08-11
Last modified date
2017-08-11
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
WEBS MQ NSS ITA
Fixed component ID
5724A3902
Applicable component levels
R531 PSY
UP
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.3.1"}]
Document Information
Modified date:
28 September 2021