Fixes are available
APAR status
Closed as program error.
Error description
The WebSphere MQ XMS application that invokes an MQGET call with an infinite wait interval hangs when the connection is closed. This problem occurs only if the GET is issued against an alias queue. If the application is run as a Windows service then the service loops and never ends when the service is stopped.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: WebSphere MQ XMS .NET applications that connect to V7 queue managers to retrieve messages from a alias queue. Platforms affected: Windows **************************************************************** PROBLEM SUMMARY: If a WebSphere MQ XMS .NET application is connected to a V7 queue manager to retrieve messages from an alias queue with an infinite wait set then the connection does not end if the application wishes to close the connection. Before closing the connection a notification is sent to the server to cancel the wait on the MQGET request. However, if the MQGET is issued on an alias queue then the queue manager agent process fails to locate the waiter since the list of waiters is prepared based on the base queue definition. Hence, the application keeps waiting on MQGET and it never ends unless the application process is forcefully terminated or the queue manager is stopped.
Problem conclusion
WebSphere MQ code has been modified so that when the queue manger agent process receives an MQRC_XWAIT_CANCELED event it searches for the base queue definition in the list of waiters rather than the alias queue definition. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.7 -------- -------------------- Windows U200333 v7.1 Platform Fix Pack 7.1.0.1 -------- -------------------- Windows 7.1.0.1 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
IC77707
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
701
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-07-25
Closed date
2011-10-11
Last modified date
2012-01-16
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
WMQ WINDOWS V7
Fixed component ID
5724H7220
Applicable component levels
R701 PSY
UP
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Document Information
Modified date:
31 March 2023