DY43942: ACTIVATE SENSE CODE 08120000 BAD CIDCTL ADD

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A device attempts to connnect to the HOST.  The request is
  rejected by VTAM because the device already has a session.  The
  SNA sense that is issued by ISTTSCAF is not specific enough to
  identify the exact error.
    MSGIST380I IST380I REQUEST ACTPU SENSE 08120000 is issued to
  indicate the error.
    A CIDCTL ADD is attempted in ISTTSCAF.  The PU control block
  still exists from a prior session.  A network architectural
  error had occurred during the DACTPU flow.  This error caused
  the DACTPU response to be ignored by one of the VTAM
  components.  VTAM is still waiting on the response before
  purging the control block. The response will never come.
    This APAR is taken to change SNA sense to be more descriptive
  of the error.
    The cause of the error will have to be identified to totally
  resolve the hung device.  A VTAM trace can be taken to assist
  in that effort.  The trace must be active during the time the
  PIU flow occurred that contained the erroneous DACTPU response.
  An RNIO (TYPE=IO) trace is sufficient to document the failure.
  

Local fix

• A VARY INACT,ID=LINEname being used by the device will make the
  line unavailable until VTAM can be restarted.
  When the specific architectural error has been identified via
  a trace, VTAM will provide a resolution for that problem.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All using VTAM.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Sense code 08120000 is issued for       *
  *                      a device trying to connect to VTAM.     *
  *                      The request is rejected because the     *
  *                      device already has a session.  The      *
  *                      sense code issued does not exactly      *
  *                      identify the error.                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Sense code 08120000 'INSUFFICIENT RESOURCES', does
  not clearly specify the exact error.  In module ISTTSCAF,
  a CIDCTL ADD is attempted.  The CIDCTL fails and results
  in the above sense code being set.
  
  The problem is that the PU control block still exists from
  a prior session due to an error that occurred during DACTPU
  processing.  This error caused the DACTPU response to be
  ignored by a VTAM component.  VTAM will not purge the
  control block until a response is received, and in
  this scenario this will never happen.
  
  This apar will change the SNA sense to be more descriptive
  of the error.
  

Problem conclusion

• Module ISTTSCAF has been changed to also check for a
  return code of NATDUPL 'DUPLICATE ADD'.  If this
  return code is received from the CIDCTL ADD, VTAM
  will send MSGIST380I with sense code 081E0004
  'SESSION FOUND BUT IN WRONG STATE'.
  

Temporary fix

Comments

APAR Information

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

  OW15921

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

  UD49843

Modules/Macros

•    ISTTSCAF
  

Fix information

• Fixed component name

  VTAM V4 VSE/ESA

• Fixed component ID

  568606501

Applicable component levels

• RFE6 PSY UD49843

     UP95/12/12 P E212

Fix is available

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