A fix is available
APAR status
Closed as program error.
Error description
ABENDEC6 with reason 0BF20050 is occurring during processing of a BPX1CAN call to cancel any previous asynchronous BPX1 calls (e.g. BPX1RCV, BPX1POL) when the Queue Manager is shutting down. CHINIT trace captured multiple instances of the failing call. The issue is that the BPX1CAN call added by PI69008 passes a pointer to the aioCb request which has its File Descriptor (aioFD) unset. This results in the new call failing before it is able to cancel the previous asynchronous BPX1 call. MQ Development would revise this processing so that the File Descriptor can be correctly set on the aioCb request made to cancel previous asynchronous BPX1 calls during Queue Manager shut down.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 9 * * Release 0 Modification 0 * **************************************************************** * PROBLEM DESCRIPTION: An EC6 abend, reason code 0BF20050 * * is seen in logrec under specific * * conditions involving incorrect * * File Descriptor logic * **************************************************************** The problem occurs during Queue Manager Shutdown when an incorrect File Descriptor value is used during the logic processing for async IO cancelling.
Problem conclusion
The parameters used for the asynchronous IO cancellation processing upon Queue Manager Shutdown have been corrected to ensure the correct File Descriptor value is used and that the EC6-0BF20050 abend does not occur.
Temporary fix
Comments
APAR Information
APAR number
PH24735
Reported component name
IBM MQ Z/OS V9
Reported component ID
5655MQ900
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-04-23
Closed date
2020-05-27
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:
UI69700
Modules/Macros
CSQXADPO
Fix information
Fixed component name
IBM MQ Z/OS V9
Fixed component ID
5655MQ900
Applicable component levels
R000 PSY UI69700
UP20/08/08 P F008
Fix is available
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Document Information
Modified date:
03 September 2020