APAR status
Closed as program error.
Error description
Issuing STOP CHANNEL MODE(TERMINATE) on a channel that has ended abruptly causes the channel to hang. The channel may permanently display STOPPING status on Windows. There is not way to end the channel in question at this point, neither using FORCE or TERMINATE options.
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Users issuing STOP CHANNEL MODE(TERMINATE) on any distributed platform. Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: If a channel thread is unresponsive, users may resort to STOP CHANNEL MODE(TERMINATE) to forcibly end the thread. On all distributed platforms the progression to stop the channel may be delayed indefinitely due to a logic error. In addition, on the Windows platform, the termination of the thread occurs but it does not cause the cleanup routines for MQ resources to be called, this can cause the channel status entry to remain permanently in STOPPING state.
Problem conclusion
The logic used to terminate a channel thread on the Windows platform is modified to ensure thread cleanup routines will execute. Additionally the logic on all distributed platforms is corrected to wait for a short period of time for the target channel thread to move in a safe code block to terminate the thread. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.1 CD 9.1.3 v9.1 LTS 9.1.0.4 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
IT28981
Reported component name
IBM MQ BASE MP
Reported component ID
5724H7271
Reported release
910
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-05-08
Closed date
2019-06-12
Last modified date
2019-06-12
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
5724H7271
Applicable component levels
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
12 June 2019