PH59043: JVMSERVER repeatedly enables then disables

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A problem within a JVMSERVER, for example a gpf in the JVM,
  causes CICS to automatically disable then re-enable the
  JVMSERVER in order to create a new working JVM.  During
  disabling a DFHSJ0008 message is issued and the
  sj_jvmserver_unexpected_term flag is set on internally.  The
  current CJSL system task is driving the disable of the JVMSERVER
  so does not see that this flag has been set.
  
  The flag is not cleared and upon re-enable of the JVMSERVER the
  new CJSL task sees that flag is set so thinks the JVMSERVER must
  be disabled and re-enabled.  If the disable results in a
  DFHSJ0008 or DFHSJ0005 being issued then the flag will again be
  set on causing the problem to repeat.
  
  CICS needs to be updated to clear sj_jvmserver_unexpected_term
  when a JVMSERVER is disabled.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: JVM server stuck in a loop of disabling *
  *                      and re-enabling.                        *
  ****************************************************************
  In the reported case, a JVM server encountered a GPF resulting
  in DFHSJ1011 and DFHSJ0007 being issued and CICS recycling the
  JVM server.  During the disable, a subsequent error occurred,
  message DFHSJ0008 was issued and a flag was set indicating the
  JVM server should be recycled however this was not processed.
  
  After being re-enabled the residual flag value resulted in the
  JVM server being disabled again.  During which an abend on the
  IPT TCB caused a DFHSJ0005 to be issued and the flag to be set
  again.  As a result the JVM server was disabled once more.
  If subsequent DFHSJ0005 or DFHSJ0008 errors occur during
  disable processing this sequence of events could recur
  indefinitely.
  

Problem conclusion

• CICS has been updated to clear the internal flag as part of the
  logic to disable a JVM server.
  

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:

  UI95788

Modules/Macros

• DFHSJJS
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R400 PSY UI95788

     UP24/04/01 P F403 ¢

Fix is available

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