PH55747: DRF JOB LOOPS WHEN RECOVERING KSDS WITH SMS-FORMAT IC

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DRF goes into a loop while recovering KSDS. This problem occurs
  when recovering a KSDS database using SMS-FORMAT IC, when there
  are Change Accumulation logs that is applied next to the IMS log
  where no IC record exists.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All IMS Recovery Solution Pack for z/OS      *
  *                 Version 2 Release 1 ( FMID=HAHM210 )         *
  *                 IMS Database Recovery Facility users.        *
  ****************************************************************
  * PROBLEM DESCRIPTION: DRF goes into a loop while recovering   *
  *                      KSDS. This problem occurs when          *
  *                      recovering a KSDS database using        *
  *                      SMS-FORMAT IC, when there are Change    *
  *                      Accumulation logs that should be        *
  *                      applied next to the IMS log where no IC *
  *                      record exists.                          *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  When all of the following conditions are met, writing database
  records results in an endless loop:
  
  IMS Database Recovery Facility recovers a KSDS database
  Input image copy is an SMS image copy
  IMS logs and CA logs are used for recovery
  ADD IC, PC, or OUTPUT(BOTH) is not specified
  When IMS logs and CA records are sorted by keys, CA log records
  are placed after IMS log records where no IC record exists
  Also, this APAR corrects the following two problems:
  #1
  When all of the following conditions are met, IMS Database
  Recovery Facility does not recover database records correctly.
   (Changes in CA in #4 below are not applied to the record.)
  - IMS Database Recovery Facility recovers a KSDS database
  - Input image copy is an SMS image copy
  - ADD IC, PC, or OUTPUT(BOTH) is not specified
  - When IMS logs and CA records are sorted by keys, database
    records are placed in the following sequence:
    1. Image Copy + No CA
    2. No Image Copy + CA
    3. No Image Copy + No CA
    4. Image Copy + CA
  
  #2
  When all of the following conditions are met, IMS Database
  Recovery Facility does not recover database records correctly:
  - IMS Database Recovery Facility recovers a KSDS database
  - Input image copy is an SMS image copy
  - ADD IC, PC, or OUTPUT(BOTH) is specified
  - When IMS logs and CA records are sorted by keys, multiple
    IMS and CA logs for database records without image copy record
    exist between image copy keys
        Or
    When IMS logs and CA records are sorted by keys, IMS and CA
    logs for database records without image copy record exist
    between image copy key and contain delete log records.
  

Problem conclusion

• This APAR corrects the problem as follows:
  
  Before this APAR, when ADD IC, PC, or OUTPUT(BOTH) was not
  specified, IMS Database Recovery Facility put only the database
  records with CA log or IMS log after restoring image copy to the
  database to be recovered. After the PTF for this APAR is
  applied, IMS Database Recovery Facility puts all of the database
   records.
  When image copy record does not exist between image copy records
  but multiple records with CA logs or IMS logs exist, IMS
  Database Recovery Facility has been corrected so that it does
  not read the next image copy while processing a database record
   without image copy records.
  
  Also, when image copy record does not exist but a CA log or IMS
  log with delete log exists, IMS Database Facility has been
  corrected so that it does not delete the next record.
  

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:

  UI93051

Modules/Macros

• FRXBDMG0 FRXIVSM0
  

Fix information

• Fixed component name

  IMS RCVR SOLUTN

• Fixed component ID

  5655V8600

Applicable component levels

• R210 PSY UI93051

     UP23/08/08 P F308 ¢

Fix is available

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