OA32193: XCF PU STUCK IN STATE PDISC AFTER PREVIOUS ABEND

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A XCF PU is hung in state PDISC. An abend had occurred while
  trying to send data on this device.  The CPNCB PC PAB is not
  cleaned up correctly by abend recovery.  The PU is waiting
  for the cleanup to complete.  The TRLE will also be hung in
  INACT state.
  
  
  ADDITIONAL SYMPTOMS:
  If the remote system is recycled, the TRLE will fail to set up
  with messages:
  IST2187I XCF SEND FAILURE ON TRLE ISTxxxxx MESSAGE TYPE: XID
  IST1684I  RETURN CODE = 00000008 REASON CODE = 00000008
  IST1578I DEVICE INOP DETECTED FOR ISTxxxxx BY ISTTSC8X CODE =
  010
  .
  The TCPIP XCF devices will fail to start with message
  EZZ4308I ERROR: CODE=8010002B DURING ACTIVATION OF DEVICE xxxx.
  DIAGNOSTIC CODE: 02
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of XCF connections.                *
  ****************************************************************
  * PROBLEM DESCRIPTION: XCF device hung PDISC or PFDSC.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  1. XCF is being used for connectivity in a sysplex.
  2. Data is sent out over an XCF connection.
  3. The MPNCB PC PAB is dispatched to process the
     outbound data.  At this point the running RPH has
     the RPHMAJCB set to the MPNCB address.
  4. After the write device is selected, module ISTTSC8W
     sets the RPHMAJCB to point to the CPNCB for the
     read/write device.  An abend then occurs in
     ISTTSC8W or one of the modules it calls.
  4. The VRR in ISTTSC8W gets control and issues TPEXIT,
     but since RPHMAJCB is not pointing to the NCB of
     the PAB which was dispatched, TPEXIT attempts to
     exit the wrong PAB.
  5. The PABs for the NCB are hung and this shows
     externally as the device being PDISC.
  6. Later attempts to inactivate the device move
     its state to PFDSC.
  

Problem conclusion

• ISTTSC8W has been updated to restore the RPHMAJCB in the
  VRR before exiting.
  
  ISTTSCMA and ISTTSC8E are included for maintenance purposes.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UA53252 UA53251 UA53253

Modules/Macros

• ISTTSCMA ISTTSC8E ISTTSC8W
  

Fix information

• Fixed component name

  VTAM V4 MVS/ESA

• Fixed component ID

  569511701

Applicable component levels

• R1A0 PSY UA53251

     UP10/04/20 P F004

• R1B0 PSY UA53252

     UP10/04/20 P F004

• R190 PSY UA53253

     UP10/04/20 P F004

Fix is available

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