PK18456: TRANSACTIONS THAT ISSUED EXEC CICS DELAYS ON A L8 TCB ARE NOT BEING REDISPATCHED. THE ICES ARE NOT EXPI 06/01/26 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• An application issues an exec cics delay with an interval.
  The interval expires, and the task is not redispatched.  The ICE
  appear not to expire.  The dispatcher domain shows that the
  waiting transaction is on a L8 TCB, yet the exec cics delay is
  not currently threadsafe.  The switch to the QR TCB has not
  taken place.  The ICE representing the delayed transaction has
  x'0's at +x'14' (the ICETECAA).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Task stuck in ICWAIT on L8 TCB          *
  *                      following EXEC CICS DELAY FOR command.  *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  It is possible for tasks to be stuck in ICWAIT following the
  issue of an EXEC CICS DELAY FOR command when a task is on an L8
  TCB. The task will be stuck because the task didn't switch to
  the QR TCB before DFHICP was called to get an ICE and so allowed
  other tasks running down the same ICE chain and manipulating it.
  This problem only occurs if the DELAY command includes the FOR
  operand.
  

Problem conclusion

• UK09424
  Module DFHEIIC has been altered, so that a switch to the QR TCB
  is done when an EXEC CICS DELAY command contains the FOR
  operand and the expiry value is not zero.
  

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:

  UK11384

Modules/Macros

•    DFHEIIC
  

Fix information

• Fixed component name

  CICSTS 3.1 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK11384

     UP06/02/08 P F602

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.