PM74023: ABEND0C4 IN MODULE DFSCM7A0, DURING LINK RESTART WHEN RPLARG STILL CONTAINS THE CID.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Abend 0c4 in DFSCMA70 near label OPNDST10. The abend is due to
  the fact that RPLARG still contains the old CID instead of a
  NIB pointer. This failure occurs on an IMS system that is
  the remote end of an MSC link whose partern is in the process
  of a TKO. At the same time the link terminates and since
  SONCOS=YES is specified in VTAM, restart recovery is taking
  place for the Link.
    We see the following message on the log just before the
  failure:
  DFS3222I 12:07:38 UNEXPECTED*STATUS ,LINK = 001,******,RC=00,
  FDB2= 00,UNBIND ....= 0F,SENSE=00000000.
    Due to the setting of CTB7INIT during this recovery attempt,
  the RPLARG field was not properly updated with the NIB address.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All V12 IMS users with MSC and SON/COS       *
  *                 (SONSCIP=YES) defined.                       *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABENDS0C4 in DFSCM7A0, when RPLARG      *
  *                      contains a CID instead of pointing      *
  *                      to a NIB.                               *
  *                                                              *
  *                      This is a forward-fit of APAR PM73190.  *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  ABENDS0C4 occurs in DFSCM7A0 near label OPNDST10.  The abend is
  due to the fact that RPLARG still contains the old CID instead
  of a NIB pointer.
  
  SON/COS processing depends on CTB7INIT being off so that the RPL
  and NIB can be initialized.  With CTB7INIT not reset during link
  cleanup, RPLARG is not initialized to point to the NIB and
  instead contains the CID from the previous session.  This leads
  to the abend when RPLARG is accessed.
  
  Note:
  To activate SON/COS, SONSCIP=YES is specified in VTAM and
  OPTIONS=(ASR) is specified on the MSPLINK macro for IMS.
  

Problem conclusion

• GEN:
  POSTREQ PM80478
  KEYWORDS:
  
  *** END IMS KEYWORDS ***
  To prevent the abend, CTB7INIT will be reset during link
  cleanup.
  
  DFSCM7Z0 has been modified to check CTBJCHGA to determine
  if a CHANGE ENDAFFNF call is in progress.
  
  DFSCM7A0 has been modified to check CLBV2RSP to detect that
  the Logon exit has been driven due to a REQSESS command and
  will issue an Opndst.
  
  DFSCM7V0 has been modified to not use CTB7INIT to determine if
  subroutine CM7VVGR needs to be called to handle CHANGE ENDAFFNF
  processing.  CTBJCHGA will be used to detect if a CHANGE
  ENDAFFNF call has been made and SCDC1SDC will be used to ensure
  that a /STA DC has been issued before calling subroutine
  CM7VVGR.
  

Temporary fix

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

Comments

• REPINNED RP13/01/15 (ATXT) TO ADD POSTREQ PM80478 INFO.
  **** PE13/01/15 PTF IN ERROR. SEE APAR PM80478 FOR DESCRIPTION
  ×**** PE13/01/16 FIX IN ERROR. SEE APAR PM80478  FOR DESCRIPTION
  

APAR Information

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

  PM73190

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

  UK82567

Modules/Macros

•    DFSCM7A0 DFSCM7V0 DFSCM7Z0
  

Fix information

• Fixed component name

  IMS V12

• Fixed component ID

  5635A0300

Applicable component levels

• R202 PSY UK82567

     UP12/10/16 P F210 Ž

Fix is available

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