PI76855: ABENDU0598 DUE TO MSDBCP VOLID INCONSISTENT DURING /ERE BACKUP IN XRF ALTERNATE SYSTEM.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• In MSDB and IMS XRF system, IMS /ERE BACKUP was failed due to
  abendU0598 after the recovery from MSDBCP error due to dasd
  volume failure.
  .
   DFS3889A SYSTEM DATASETS INCONSISTENT - MSDBCP
   DFS629I IMS RST TCB ABEND - IMS 0598
   DFS629I PSW AT ERROR = 077C1000 99E7ED6A  IMP2
   DFS629I MODID = NRST0598A         EPA = 1724AAF4  IMP2
  .
  -------------------------------------------------------------
  <> Flow of the problem:
  (A)
  IMP1 (IMS ALT)   | IMP2  (IMS ACT)
    ----------- MSDB Pair -----------
     MSDBCP1       |    MSDBCP3
     MSDBCP2       |    MSDBCP4
  ----------------------------------------
  1) FORCE OFFINE for MSDBCP3 from IMP2 system.
  2) F STOP command for IMS New Active IMP2
  3) TAKEOVER to IMP1 (IMSALT)
  (B)
  IMP1 (IMS ACT)   | IMP2  (IMS ALT)
    ----------- MSDB Pair -----------
     MSDBCP1       |    MSDBCP3 (Offilne)
     MSDBCP2       |    MSDBCP4
  ----------------------------------------
  4) RECOVERY MSDBCP3 (create MSDBCP3 to different
      volume by copy from MSDBCP4.
  5) /ERE BU for IMSPA2
  6) GOT abendU0598
  .
  <> Explanation:
  Problem scenario;
  Act:ims2(using MSDBCP3,4)  Alt:ims1(using MSDBCP1,2)
  1) VARY OFFLINE xxxx,FORCE for the DASD-VOL which is
     MSDBCP3 d/s.
  2) Stop Act IMS(F ims2,stop) and TKO (Act:ims2->ims1)
  3) Create MSDBCP3 d/s in other volume and copy from MSDBCP4
  4) Restart ims2 as Alternate (/ERE BU)
  ->ABEND U0598
  ---
  this problem doesn't occur above scenario when
  Act:ims1(using MSDBCP1,2) Alt:ims2(using MSDBCP3,4).
  .
  ------------------------------------------------------------
  The MSDBCP3 is not for active IMS pair,
  the current IMS active MSDBCP pair is 01/02.
  So the U0598 due to VOLID inconsistent for MSDBCP3
  should not be occurred at /ERE BU in XRF Alternate system.
  .
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IMSFP V15 MSDB with XRF users.                               *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * ABENDU0598 DUE TO MSDBCP VOLID                               *
  * INCONSISTENT DURING /ERE BACKUP                              *
  * IN XRF ALTERNATE SYSTEM.                                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * INSTALL CORRECTIVE SERVICE FOR APAR/PTF                      *
  ****************************************************************
  In MSDB and IMS XRF system, IMS /ERE BACKUP failed with
  abendU0598 after the recovery from MSDBCP error due to DASD
  volume failure.
  The scenario as followed:
  1: FORCE OFFINE for MSDBCP3 from IMP2 system.
  2: F STOP command for IMS New Active IMP2
  3: TAKEOVER to IMP1 (IMSALT)
  (B)
  IMP1 (IMS ACT)   | IMP2  (IMS ALT)
  ----------- MSDB Pair -----------
  MSDBCP1       |    MSDBCP3 (Offline)
  MSDBCP2       |    MSDBCP4
  4: RECOVERY MSDBCP3 -create MSDBCP3 to different
  volume by copy from MSDBCP4.
  5: /ERE BU for IMSPA2
  6: GOT abendU0598
  Since the current IMS active MSDBCP pair is 01/02,
  the U0598 due to VOLID inconsistent for MSDBCP3
  should not be issued for /ERE BU in XRF Alternate system.
  

Problem conclusion

• GEN:
  KEYWORDS:
  
  *** END IMS KEYWORDS ***
  The following change has been made to correct the reported
  problem:
  DBFNRST0:  Corrected the code that does MSDBCP 1/2, and
             MSDBCP 3/4 consistency checking.
  

Temporary fix

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

Comments

APAR Information

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

  PI72481

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

  UI45231

Modules/Macros

• DBFNRST0
  

Fix information

• Fixed component name

  IMS V15

• Fixed component ID

  5635A0600

Applicable component levels

• R500 PSY UI45231

     UP17/03/04 P F703 ¢

Fix is available

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