APAR status
Closed as program error.
Error description
When performing a quiesce shutdown, the queue manager does not end. A failure data capture (FDC) record reporting xecL_W_LONG_LOCK_WAIT is seen for the amqfqpub process. This issue is only seen when stopping the queue manager immediately after it has started.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users of WebSphere MQ V7.5. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: A small timing window existed during the shutdown process which could cause a deadlock which meant the queue manager could hang if a broker was started at the same time. This problem has not been experienced by customers but was produced during internal testing.
Problem conclusion
The MQ code has been updated to prevent the deadlock. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v7.5 7.5.0.8 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
IT19750
Reported component name
WMQ BASE MULTIP
Reported component ID
5724H7241
Reported release
750
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-03-17
Closed date
2017-05-08
Last modified date
2017-05-10
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
5724H7241
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSDEZSF","label":"IBM WebSphere MQ Managed File Transfer for z\/OS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
31 March 2023