A fix is available
APAR status
Closed as program error.
Error description
Batch job not getting cpu.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Applications using AMS hang when * * insufficient AMS worker tasks are * * available. * **************************************************************** When an application accesses an AMS protected queue, requests are passed to worker tasks in the AMSM address space. If no tasks are available when a request is made, the request is added to a chain for processing when a task becomes available, either due to completing an inflight request, or due to a new task being started. An error in the chaining logic for some request types can lead to those requests being incorrectly removed from the chain of pending work. This results in those requests never being processed, and the task requesting them remaining hung.
Problem conclusion
The chaining logic in CSQ0KRPT and CSQ0KRUP is changed to prevent the requests being incorrectly dechained.
Temporary fix
Comments
APAR Information
APAR number
PH06218
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
010
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-12-06
Closed date
2019-05-13
Last modified date
2019-07-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI62971
Modules/Macros
CSQ0KRPT CSQ0KRUP
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
R100 PSY UI62971
UP19/06/06 P F906 ¢
Fix is available
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Document Information
Modified date:
01 July 2019