PH71977: DFHDS0002 A SEVERE ERROR (CODE X'0056') IN MODULE DFHDSKE AFTER PURGES IN JVMSERVER

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Your CICS region terminates after receiving the following error:
  DFHDS0002 A severe error (code X'0056') has occurred in module
  DFHDSKE
  
  This severe error code is associated with the following CICS
  trace entry:
  DS 0056 DSKE  *EXC* - DSKE_TASK_SUSP_TOK_IN_USE
  
  MSGUSR shows the following for attempts to purge transactions
  prior to the dump and termination:
  DFHAP1900  CICSRGNA XXXX SET TASK(01234) PURGETYPE(PURGE)
  RESP(INVREQ) RESP2(5)
  
  INVREQ RESP2(5) indicates that task is not in a valid state for
  purging. The Task gets into an invalid state because the Task is
  incorrectly resumed twice; once by itself after the purge and
  once by another task that is completing its work and so frees a
  thread within the JVMSERVER.
  
  Additional Keywords:
  KIXREVETU
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS TS users.                           *
  ****************************************************************
  * PROBLEM DESCRIPTION: CICS region terminates with severe      *
  *                      error DFHDS0002 in DFHDSKE with severe  *
  *                      error code X'0056' after a transaction  *
  *                      waiting for a JVMTHREAD is purged.      *
  ****************************************************************
  A JVM server is enabled in a region, a task needs to run a
  program within the JVM server but all threads are in use by
  other tasks. While suspend the transaction is purged.
  Simultaneously the task is resumed because a thread becomes
  available. This exposes a timing window that leads to message
  DFHDS0002 with severe error code X'0056', and terminates the
  CICS region.
  

Problem conclusion

• DFHSJTH has been altered to prevent the issue.
  

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:

  PH72400 UO09318

Modules/Macros

• DFHSJDM  DFHSJDUF DFHSJJS  DFHSJST  DFHSJTH
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R300 PSY UO09318

     UP26/09/10 I 1000 ¢

Fix is available

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