Fixes are available
APAR status
Closed as program error.
Error description
A customer using endmqm found that their queue manager would take up to 10 minutes to end if there were any SVRCONN channels running when the endmqm command was issued. No errors or FFSTs were reported. Hangdoc (SIGUSR2/amqldbgn) FFSTs revealed that endmqm is stuck inside rrxStopAllChannels fo a long time, even though the channel threads have all received MQRC_CONNECTION_BROKEN from their MQI calls.
Local fix
test fix supplied to customer
Problem summary
**************************************************************** USERS AFFECTED: Users who issue endmqm at a time when SVRCONN channels are active who need the queue manager to end quickly. There is a subtle timing condition which triggers the delay, so not all endmqm commands would be affected. Platforms affected: All Distributed (iSeries, all Unix and Windows) **************************************************************** PROBLEM SUMMARY: During endmqm processing, the endmqm command waits for all channel processes to end before it will exit. There was a defect in the error handling on WMQ SVRCONN channels such that the queue manager ending did not result in the channel thread shutting down. As a result, the channel thread kept running until it eventually timed out due to inactivity. Since endmqm waited for all channels to end, the channel delay caused endmqm to run for a long time.
Problem conclusion
The WMQ SVRCONN error handling has been corrected, so that queue manager shutdown is detected and SVRCONN channel threads will now shut down promptly in response to the queue manager ending. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v6.0 Platform Fix Pack 6.0.2.5 -------- -------------------- Windows U200292 AIX U815929 HP-UX (PA-RISC) U815636 HP-UX (Itanium) U815818 Solaris (SPARC) U815659 Solaris (x86-64) U815928 iSeries tbc Linux (x86) U815767 Linux (x86-64) U815808 Linux (zSeries) U815805 Linux (Power) U815806 Linux (s390x) U815807 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
IZ18142
Reported component name
WMQ LIN X86 V6
Reported component ID
5724H7204
Reported release
601
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2008-03-20
Closed date
2008-03-28
Last modified date
2008-03-28
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 LIN X86 V6
Fixed component ID
5724H7204
Applicable component levels
R600 PSY
UP
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Document Information
Modified date:
31 March 2023