APAR status
Closed as program error.
Error description
When number of the connections increases, WebSphere MQ 8.0 queue manager performance declines quickly, and becomes slow or unresponsive then. The FDCs with Probe IDs XC307100 and/or XC308010 might also be generated with high CPU usage from channel processes. Probe Id :- XC307100 Component :- xlsRequestMutex Program Name :- amqrmppa Major Errorcode :- xecL_W_LONG_LOCK_WAIT MQM Function Stack ccxResponder rrxResponder rriAcceptSess rriAcceptSessReceive rriAddStatusEntry xlsRequestMutex xcsFFST Probe Id :- XC308010 Component :- xlsReleaseMutex Program Name :- amqrmppa Major Errorcode :- xecL_W_LONG_LOCK_WAIT MQM Function Stack ccxResponder rrxResponder rriAcceptSess rriAcceptSessReceive rriAddStatusEntry xlsReleaseMutex xcsFFST
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users using MQ v8 queue manager with lot of MQ clients and/or with clients often connecting and disconnecting. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: This problem occurred because of delay in scanning the channel status table.
Problem conclusion
MQ has been modified to improve the performance when scanning the channel status table. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.2 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
IT08284
Reported component name
WMQ BASE MULTIP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-04-13
Closed date
2015-04-29
Last modified date
2015-05-05
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 BASE MULTIP
Fixed component ID
5724H7251
Applicable component levels
R800 PSY
UP
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Document Information
Modified date:
05 May 2015