APAR status
Closed as program error.
Error description
A multi-threaded MQ application on Windows hangs in MQCONNX. Before this, it may be observed that another thread has exited without performing MQCLOSE and MQDISC processing. A similar problem is observed at version 9.1.0.x and is resolved by APAR IT28639.
Local fix
1. Ensure that all child threads terminate correctly by closing MQ resources with MQCLOSE and MQDISC. 2. Set the client channel definition to use SHARECNV(0)
Problem summary
**************************************************************** USERS AFFECTED: Users of WebSphere MQ on Windows with multi-threaded client applications. Platforms affected: Windows **************************************************************** PROBLEM DESCRIPTION: If a child thread in an application terminated abnormally within an MQDISC, any subsequent threads which were started hung during the MQCONNX request. The subsequent MQCONNX request was waiting for the previous thread which is no longer available.
Problem conclusion
The MQ client code for Windows has been changed to recognize that a child thread has terminated abnormally and no longer wait. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v8.0 8.0.0.16 v9.0 LTS 9.0.0.11 v9.1 LTS 9.1.0.3 v9.x CD 9.1.1 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
IT25939
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7251
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-08-21
Closed date
2020-06-18
Last modified date
2020-06-22
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
IBM MQ BASE MP
Fixed component ID
5724H7251
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
23 June 2020