APAR status
Closed as program error.
Error description
The command amqldmpa was executed to dump the state of a queue, but it ended with a memory exception (SIGSEGV). Then, a new MQ application which started came up with same PID used by the amqldmpa. The application went unresponsive and the queue manager did not respond to some of the MQ commands (e.g. dis ql) and the following FDCs were generated. 2018/12/21 23:21:17.020987+7158 amqzxma0 5505234 1 ZX005022 zxcProcessChildren lrcW_S_FAST_PATH_APP_DEAD 2018/12/21 23:25:03.092495+7158 amqzlaa0 13959380 60341 XC307100 xlsRequestMutex xecL_W_LONG_LOCK_WAIT
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Using MQ fastpath applications including MQ commands (e.g. amqldmpa) Platforms affected: MultiPlatform **************************************************************** PROBLEM DESCRIPTION: When an MQ application running in fastpath mode ends abruptly the queue manager was not releasing the resources associated with the application and this caused the queue manager hang.
Problem conclusion
MQ code has been modified to cleanup the resources associated with abruptly ended fastpath applications --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: Version Maintenance Level v9.0 LTS 9.0.0.8 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
IT27752
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
2019-01-13
Closed date
2019-07-12
Last modified date
2019-07-12
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
5724H7251
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":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
12 July 2019