A fix is available
APAR status
Closed as program error.
Error description
A CALL 'MQSETMP' begin to fail with MQRC_PROPERTY_NAME_ERROR after UI60304 was applied. The problem occurs because the DSA back chain is no longer set after UI60304 is applied - this doesn't affect MQ processing, as the callers registers are saved on the stack and are correctly restored, however it causes CEEVGTUN to abend U4088 when called from CSQBLECS because this LE routine attempts to validate the dsa chain. This will only occur when the application CCSID has not already been resolved prior to the MQSETMP call - for example when the application is compiled/linked using the stub interface (e.g. CSQBSTUB) rather than the dlls (e.g. CSQBLB1), and has not issued any non message-property API calls prior to message property calls.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM MQ for z/OS Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Message property APIs fail with * * MQRC_PROPERTY_NAME_ERROR (MQRC2442) * * after UI60304 has been applied. * **************************************************************** Following the changes introduced by PI91780, CSQBPAPI was no longer chaining its savearea to the caller's. This savearea was not used for MQ, which was using the linkage stack to save the callers registers. However, in some cases CEEVGTUN is called to locate DSA storage, and this requires the back chain to be set. As this was not set correctly, a U4088-99 abend occurs.
Problem conclusion
CSQBPAPI is changed to chain its savearea to the callers. MQMSGPROP/K
Temporary fix
Comments
APAR Information
APAR number
PH18311
Reported component name
IBM MQ Z/OS V8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
YesPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-10-21
Closed date
2019-11-13
Last modified date
2019-11-30
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI66404
Modules/Macros
CSQBPAPI
Fix information
Fixed component name
IBM MQ Z/OS V8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI66404
UP19/11/27 P F911
Fix is available
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Document Information
Modified date:
30 November 2019