PH62847: JVM SERVER DOESN'T AUTOMATICALLY DISABLE AND RE-ENABLE AFTER RECEIVING AN UNEXPECTED SIGNAL.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• After receiving an unexpected signal the JVM server doesn't
  automatically disable and re-enable.
  
  The logs shows :
  
  DFHSJ0007  Unexpected signal received by JVMSERVER
  
  The JVM server listener task, CJSL, goes in to a loop resulting
  in increased CPU and eventually it abends with an AKEC (runaway
  detection).
  
  
  Additional information :
  
  The joblog also shows repeated instances of :
  
  DFHSJ1006 An attempt to attach to JVMSERVER XXXXXX has failed
  because the JVMSERVER does not exist
  
  DFHSJ1006 An attempt to attach to JVMSERVER XXXXXX has failed
  because the Liberty Link request has timed out
  
  Keywords: Upgrade2CICS61
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHSJ1006 occurs after a Liberty        *
  *                      JVMSERVER receives an unexpected        *
  *                      signal which leads to an AKEC abend.    *
  ****************************************************************
  A Liberty JVMSERVER which has performed Link to Liberty tasks
  receives an unexpected signal reported in the following message:
  
  DFHSJ0007  Unexpected signal received by JVMSERVER
  
  This is followed by:
  
  DFHSJ0001 APPLID An abend (code ---/AKEC) has occurred at
  offset X'FFFFFFFF' in module DFHSJJS.
  
  DFHSJ0002 APPLID A severe error (code X'3702') has occurred in
  module DFHSJL.
  
  The JVMSERVER needs to be KILLed in order to disable it.
  

Problem conclusion

• CICS has been updated to ensure an endless loop does not occur
  after an unexpected signal has been received on a Liberty
  JVMSERVER which has performed Link to Liberty tasks. This
  ensures that the JVMSERVER can be automatically disabled and
  re-enabled.
  

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:

  UI99247

Modules/Macros

• DFHSJJS
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R400 PSY UI99247

     UP24/12/05 P F412 ¢

Fix is available

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