PM98427: A LOAD JOB WAS CANCELLED ABENDS222 WHICH BROUGHT DOWN DB2 WITH DSNV086E REASON 00D94001 AND ABENDS978 RC0 13/10/03 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• A 'LOAD DATA PREFORMAT RESUME NO REPLACE LOG YES INTO TABLE
  BRC.TBATP0SACTI' JOB was cancelled by the user, with the
  ABEND222 showing in the DMTR :
  500 081B CBFA596783D95EB1 DSNTABA+854 DTIBABRI 00000000_40222000
  and brought the DB2 MSTR address space down with MSGDSNV086E
  RC00D94001 and ABEND978 00000004 RC04 on a failed FREEMAIN for
  the present contents of MMRBRBEB x'0000648C'
                                                   .
  May see abend387 rc14 in DSNB1AEX
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: DB2 V9 users with UK92093 applied.           *
  *                 DB2 V10 users with UK92092 applied.          *
  *                 All DB2 V11 users.                           *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND978 and DB2 abnormal termination   *
  *                      RC00D94001.                             *
  *                                                              *
  *                      Abend is most likely to occur after a   *
  *                      cancel of a LOAD or REORG utility with  *
  *                      the PREFORMAT option specified.         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  PM80265 modified the I/O abend recovery logic to allow for the
  presence of an I/O error block (MMRBE) even if the I/O error
  flag was not on.  However, the pointer to this block in the
  MMRB is a shared field which Media Manager may store a CI number
  into during a preformat request.  Therefore a canceled preformat
  may cause the recovery routine to misinterpret a CI number as a
  block pointer, resulting in an abend 978 when an attempt is made
  to free that block.  Since this abend happens during abort
  processing, it brings down DB2.
  ADDITIONAL SYMPTOMS: ABEND0C4 DSNB1AEX +174 due to a bad
                       MMRBEPTR pointer.
  

Problem conclusion

• The I/O recovery code has been modified to remove the change
  made by PM80265, for the preformat case only.  Preformat is the
  only case where Media Manager may store something into the field
  used to store the error block pointer, and preformat is not
  subject to the problem fixed by PM80265 (the presence of an
  I/O block for a "related" I/O error).
  

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:

  UI12259 UI12260 UI12261

Modules/Macros

• DSNB1IOR
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RA10 PSY UI12259

     UP13/11/22 P F311 ®

• RB10 PSY UI12260

     UP13/11/22 P F311 ®

• R910 PSY UI12261

     UP13/11/22 P F311 ®

Fix is available

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