PM50531: DPL REQUESTS TO CICS TS 4.1 OVER IPIC WITH UNKNOWN MIRROR TRANSACTION RETURN NO RESPONSE.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When sending DPL requests that specify a mirror transaction
  that is not known to CICS TS V4.1 over IPIC, the expected
  abendAZI6 is not returned.
  No messages are seen in the CICS log to indicate that an unknown
  mirror transaction has been received. No errors are returned
  the caller.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Transaction hangs in a client when the  *
  *                      TRANSID specified in the EXEC CICS      *
  *                      LINK command does not exist in the      *
  *                      server region over an IPIC connection.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The transaction number is returned in xmat_trannum and moved
  into issb_tran_number by the domain call.
  The mirror task starts and links to the user program which
  completes successfully.
  A second EXEC CICS LINK is received from the CTG client.
  The LINK request specifies a TRANSID that is not defined in
  the server region.
  DFHISRR does the DFHXMAT ATTACH which returns an EXCEPTION
  response with a reason of NOT_FOUND.Before DFHISRR checks the
  response from XMAT,the domain call moves xmat_trannum
  into issb_tran_number. The value moved is the transaction
  number returned from the previous XMAT ATTACH.
  Dfhisrr_conv_error is called for trace ID
  id_isrr_trans_not_found.If issb_tran_number is not zero
  then the code expects that the running task will SEND
  the IS7 back to the client.
  The task does not exist and no IS7 is sent to the CTG client
  causing it to wait until it TIMEOUT.
  
  Additional keywords: MSGDFHIS1025, IS1025
  

Problem conclusion

• DFHISRR has been changed so that the values xmat_trannum and
  xmat_transaction_token are only moved into issb_tran_number
  and tran_token if the DFHXMAT ATTACH attaches a task.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  UK74995 UK75022

Modules/Macros

•    DESISRR  DFHISRR
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R600 PSY UK74995

     UP12/01/11 P F201

• R700 PSY UK75022

     UP12/01/11 P F201

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.