OW25577: AFTER A VTAM STOP/RESTART, THE CDRM IS IN PACDR STATUS. ABEND0C4OCCURS IN ISTTSCXI ON THE OTHER VTAM THAT IS CONNECTED BY CTC.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• VTAM-A and VTAM-B are connected by ESCON CTCA.
  First, both CDRMs are active status. One VTAM(ex. VTAM-A) is
  stopped and restarted. Then abend0c4 occurs in module ISTTSCXI
  on the other side VTAM(VTAM-B) and the cdrm of VTAM-A is in
  PACDR status on VTAM-A. It's still in INACT status on VTAM-B.
  Abend0c4 occurs at offset x'e52' in module ISTTSCXI(96.331) that
  was called by ISTPUCRT. The failing instruction is 'BA8A,E290'.
  Due to null reg14 r14 which was loaded from ICNCB(reg9) + 46C.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All using CTC connections.                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND0C4 ISTTSCXI during INOP           *
  *                      processing for a CTC connection.        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Code was added to take diagnostic dumps should an INOP occur on
  MPC or AHHC connection.  Modules ISTTSCXI and ISTTSCXR are
  among the modules which have coded added for this purpose.
  These modules are are also called for basic CTC connections.
  The diagnostic dump enhancements stored information in the
  MPNCB which was referenced via the CPNMPNCB pointer.  In a
  basic CTC connection this field is zero, which results in the
  ABEND0C4.  The ABEND0C4 could show up in ISTTSCXI or ISTTSCXR
  depending on which module INOPed the connection.
  

Problem conclusion

• Modules ISTTSCXR and ISTTSCXI have been corrected to check the
  XCNSNACP is on prior to storing data into the MPNCB.
  ISTTSCXE has been included for maintenance purposes.
  

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:

  UW37005

Modules/Macros

• ISTTSCXE ISTTSCXI ISTTSCXR
  

Fix information

• Fixed component name

  VTAM V4 MVS/ESA

• Fixed component ID

  569511701

Applicable component levels

• R401 PSY UW37005

     UP97/04/09 P F704

Fix is available

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