PM91412: 04E IN DFHD2D2

Obtain the fix for this APAR.

APAR status

• Closed as unreproducible.

Error description

• 04E abend in DFHD2D2 using a JSON pipeline.
  Additional symptoms:
  Trace shows a task  switiching between the L800B and T8002 TCBs
  fine until we rry to issue a DISSOCIATE_THREAD on the T8 and
  receive ABEND04E FRB 00F31104 from DB2 since this T8 has not
  had an ASSOCIATE issued.
  The following message may be issued:
  DFHAC2250  The coordinator system has indicated that the current
             unit of work is to be backed out.
             Transaction CPIH running program DFHPIDSH term ????
             has been abnormally terminated with abend ASP3.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: A transaction, invoked by a web service *
  *                      request, abends ASP3 or ASP7 after DB2  *
  *                      updates.                                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A web service request is received by CICS and processed by an
  Axis2 pipeline. A non-Java application is called which contains
  DB2 calls. The CICS TCB under which the application is running
  is associated with a DB2 thread by the CICS DB2 attachment
  facility. The DB2 calls are executed successfully.
  Upon returning to the CICS pipeline domain, a TCB change mode
  is performed to switch execution from an L8 to T8 TCB.
  Subsequently when DB2 attempts to dissociate its thread from
  the CICS TCB it does so using the T8 TCB not the L8 TCB it is
  associated with. As a result an ASP3 or ASP7 abend occurs and
  the DB2 updates are backed out.
  Keywords: DFHAC2249 msgDFHAC2249 AC2249 abendASP3 abendASP7
  

Problem conclusion

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

• DFHPIPM has been modified such that if a TCB change mode is
  required upon return from an invoked application program, the
  CICS RMI is notified. This allows for the successful dissociate
  of an associated DB2 thread if required.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UI30592

Modules/Macros

• DFHPIPM
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R800 PSY UI30592

     UP15/09/04 P F509

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.