APAR status
Closed as program error.
Error description
A problem occurs when a queue manager attempts to respond to an EeplDiscConFail event for a failed peer's connection to an application structure at a time when connectivity to the admin structure has been lost. The queue manager is unable to complete PLR phase 1 due to the unavailable admin structure connection, and responds to the event accordingly. However, when processing a usync set by another queue manager that was also performing PLR for the connection, an attempt is made to respond to the same event a second time. This fails with IxlRsnCodeInvalidEvent, leading to the observed abend.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 1 Modification 0 and Release 2 * * Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend 5C6-00C51045 CSQELPLM.CSQESTE * * after a peer connection failure. * **************************************************************** A queue manager receives an EeplDiscConFail event after a peer suffers a connection failure to the application structure, at a time when the queue manager's own connectivity to the admin structure has been lost. The queue manager is unable to complete PLR phase 1 due to the unavailable admin structure connection and responds to the event accordingly. However, when processing a USYNC set by another queue manager that was also performing PLR for the connection, an attempt is made to respond to the same event a second time. This fails with IxlRsnCodeInvalidEvent, leading to the observed ABEND5C6 00C51045. Additional keywords: Csqe_SyncPointEvent_Begin Csqe_SyncPointEvent_End
Problem conclusion
The Shared Queue Structure Event Processor CSQESTE has been updated for the reported problem so that it does not attempt to respond to the same EeplDiscConFail event a second time.
Temporary fix
Comments
APAR Information
APAR number
PH23086
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-03-09
Closed date
2020-12-15
Last modified date
2020-12-15
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI73139 UI73140
Modules/Macros
CSQESTE
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"100"}]
Document Information
Modified date:
16 December 2020