PH17003: DFHMQ0704E ISSUED DURING CICS SHUTDOWN RESULTS IN MQGET TIMEOUTS.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CICS TS 5.4
  We saw MQGET TIMEOUT failures in the consumer (this case our IIB
  based Enterprise server platform) correlate exactly with
  recycles of the MQ DPL Bridge regions.
  During CICS shutdown we get messages :
  DFHMQ0704 E  12:05:35 CICSRGN CKBR 00080 EIBRESP=16 EIBRESP2=17
                        returned for EXEC CICS call. EIBFN=1008.
  DFHMQ0760 I  12:05:35 CICSRGN CKBR 00080 MsgId=414D51204E314....
  DFHMQ0762 I  12:05:35 CICSRGN CKBR 00080 Queue name=ABC.CICS.EFG
  After these messages, we see MQGET timeouts back in the
  requester.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHMQ0704E with EIBRESP=16,             *
  *                      EIBRESP2=17 and EIBFN=1008 when         *
  *                      starting CKBP transaction during CICS   *
  *                      shutdown.                               *
  ****************************************************************
  During a shutdown of a CICS region it is possible to receive
  message DFHMQ0704E when starting CKBP. If DFHMQBR0 issues the
  start for CKBP as CICS is shutting down then it will issue
  message DFHMQ0704E but also it will remove the message without
  processing it. Any other systems that could be attempting to
  read this message of the queue will get an MQGET Timeout.
  

Problem conclusion

• DFHMQBR0 has been changed to detect that CICS is shutting down
  when attempting to start CKBP.  In this case, issue a new
  message DFHMQ0708I and do not remove the message from the
  Bridge Queue.
  
  The CICS messages have been updated with a new message DFHMQ0708
  
  DFHMQ0708 I date time applid tranid trannum CICS-MQ Bridge
  failed to start CKBP because CICS is shutting down.
  
  Explanation
  The CICS-MQ bridge could not start CKBP because the CICS region
  was being shutdown.
  
  System action
  CICS shutdown continues.
  
  User response
  None.
  
  Module
  DFHMQBR0
  

Temporary fix

Comments

APAR Information

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

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

  UI70736 UI70737 UI70738 UI70739

Modules/Macros

• DFHMEMQC DFHMEMQE DFHMEMQK DFHMQBID DFHMQCM@ DFHMQP0@ DFHMQP1@
  DFHMQP3@ DFHMQR0@
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R100 PSY UI70736

     UP20/07/25 P F007

• R103 PSY UI70737

     UP20/07/25 P F007

• R200 PSY UI70738

     UP20/07/25 P F007

• R300 PSY UI70739

     UP20/07/25 P F007

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.