A fix is available
APAR status
Closed as program error.
Error description
Fix corrupted PTF PH40655/UI77821
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * All IMS V15 users using non-IBM tool which specifies * * DFSMTCNT as an inputting terminal. * **************************************************************** * PROBLEM DESCRIPTION: * * AbendU0757 subcode001 in module DFSQMGR0 at label QMGENT4B. * * PH40655 was to fix this problem, but its PTF UI77821 became * * corrupted during final ship processing and is uninstallable. * * This APAR replaces PH40655. * **************************************************************** * RECOMMENDATION: * * INSTALL CORRECTIVE SERVICE FOR APAR/PTF * **************************************************************** The failing scenario is as follows: 1. A transaction was entered via a non-IBM tool which established DFSMTCNT as an inputting terminal. 2. If the transaction caused an abend like U3047 in this case, the syncpoint processor would request DFS555I message to be sent to the MTO and the inputting terminal. 3. During the process sending the DFS555I to the inputting terminal as a system CNT, DFSCLMR0 detected QTPRRN field was non-zeroed and attempted to cancel the message. This led to abendu0757 subcode001. The save area flow was DFSTMS00, DFSFXC30, DFSSYI40, DFSFXC40, ABENDMSG, DFSCLMR0, UNKNOWN, CLMRCANC, DFSPREQ0, DFSQMGR0. DFSMTCNT is the name of an internal system logical terminal (LTERM) for CMTI itask's CNT control block. Any message destined to this LTERM is unexpected and unsupported. Note: APAR PH40655/PTF UI77821 was originally taken to fix the reported problem. A tooling issue during the final ship of PTF UI77821 corrupted the PTF such that it would not install (link edit errors occurred during apply). PTF UI77821 is marked PE and is SUPed by this APAR, which is otherwise identical to the original.
Problem conclusion
DFSCLMR0 is enhanced to detect and suppress a DFS message destined to DFSMTCNT.
Temporary fix
Comments
APAR Information
APAR number
PH41797
Reported component name
IMS V15
Reported component ID
5635A0600
Reported release
500
Status
CLOSED PER
PE
YesPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-11-02
Closed date
2021-11-09
Last modified date
2021-12-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI77993
Modules/Macros
DFSCLMR0
Fix information
Fixed component name
IMS V15
Fixed component ID
5635A0600
Applicable component levels
R500 PSY UI77993
UP21/11/12 P F111 {
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPH2","label":"IMS"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"15","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
22 December 2023