A fix is available
APAR status
Closed as program error.
Error description
Customer use LU61 connection between CICS. After DFHRM0107, UOWs are retained to wait the forget flow. DFHRM0107 INTERSYSTEM COMMUNICATION FAILURE. RESOURCE UPDATES MAY BE OUT OF SYNC. Customer get start up delay for the specific CICS becasue old UOWs retained for a long time. These UOWs retained until INITIAL start of CICS. (COLD start, CEMT SET UOW FORCE does not work.)
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users. * **************************************************************** * PROBLEM DESCRIPTION: CICS warm or emergency start takes a * * long time due to a large number of UOWs * * waiting to be recovered. * **************************************************************** * RECOMMENDATION: * **************************************************************** User has a pair of DTP transaction that communicate over an LU61 connection. But the backend transaction is not defined and DFHZEMW is called by DFHACP to send error message return to frontend. Then DFHZEMW sets abort completion flag the LU61 TCTTE and returns to DFHACP. But during task termination process, recovery manager invokes DFHCR1U to perform the processing for LU61 sessions backing out task-termination syncpoint. DFHZEMW is invoked again and it detects error message has already been sent but returned with a return code x'0C' in the TCA field TCATPAPR. This directly leads DFHCR1U set wrong rmlk flags. Thus, old UOW not deleted and also cause the UOW to wait for a FORGET flow from the frontend region. Keyword: msgDFHRM0107
Problem conclusion
DFHZEMW has been changed to return a value of x'00' in field TCATPAPR when it detects that an ABORT processing has already completed or that an ABORT has already been sent.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PM83896
Reported component name
CICS TS Z/OS V4
Reported component ID
5655S9700
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-02-28
Closed date
2013-04-21
Last modified date
2013-06-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PM85383 UK93765 UK93764
Modules/Macros
DFHZEMW
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
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.
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Document Information
Modified date:
04 June 2013