A fix is available
APAR status
Closed as program error.
Error description
We can see from the doc that the reason for the abend 5C6-00C511AD is indeed the admin structure filling up. Once this structure is full, a shared channel that is starting is attempting to write a new Serialized Access List Entry into the admin structure and failing. Unfortunately the code fails to handle the RC 00000C17 (IxlRsnCodeStrFull) and instead abends.
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 0 Modification 0 and Release 1 * * Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: If the admin CF structure is full, then * * starting a serialized application, such * * as a shared channel, will cause an * * abend 5C6-00C511AD in the chinit. * * * * Additionally, if a get or put is * * issued from a serialized application * * while the admin CF structure is full, * * the same abend will be issued. * **************************************************************** When a serialized application is started, some information is written to the admin CF structure to let other QMGRs in the QSG know that an instance of this application is running. Similarly, when performing a get or put to a shared queue from a serialized application, information is written to the admin CF structure to allow for disaster recovery. The code which writes this information is not expecting the admin CF structure to be full and subsequently abends.
Problem conclusion
The code has been changed to periodically retry the write, and return a failed completion code and MQRC 2102 MQRC_RESOURCE_PROBLEM if the structure is still full.
Temporary fix
Comments
APAR Information
APAR number
PH22437
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-02-20
Closed date
2020-06-25
Last modified date
2020-09-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI70269 UI70270
Modules/Macros
CSQEMGEC CSQEMGEK CSQEMGET CSQEMPUT CSQESAPP CSQETHDP CSQIMGES CSQIMPUS CSQMCUWT CSQMGET CSQMPOM CSQXRMRC
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
Fix is available
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Document Information
Modified date:
02 September 2020