PH60797: IMPROVE PROCESS PERFORMANCE FOR STANDARD JOB PROCESSING OF IMS HP CHANGE ACCUMULATION

Obtain the fix for this APAR.

APAR status

• Closed as new function.

Error description

• This APAR improves process performance for standard job
  processing of IMS HP Change Accumulation.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IMS High Performance        *
  *                 Change Accumulation Utility of IMS Recovery  *
  *                 Solution Pack for z/OS Version 2 Release 1   *
  *                 ( FMID=HAHM210 ).                            *
  ****************************************************************
  * PROBLEM DESCRIPTION: This APAR improves IMS HP Change        *
  *                      Accumulation performance under certain  *
  *                      conditions.                             *
  *                      This APAR also includes the correction  *
  *                      of existing message number.             *
  ****************************************************************
  * RECOMMENDATION: INSTALL CORRECTIVE SERVICE FOR APAR/PTF      *
  ****************************************************************
  IMS HP Change Accumulation improves performance when run under
  the following conditions:
  - Both CATDS and NOCHECK are defined for DBRC RECON status
  - Use parallel sort in the standard job processing
  - RECON data sets are allocated or IMS MDA library that defined
    RECON data sets are specified in IMS HP Change Accumulation
    main JCL
  - Use necessary temporary data set is allocated on DASD
  
  The standard job processing creates address spaces for each CA
  group, and each address space creates CA data sets in parallel.
  The main program reads input log data sets, distributes the
  data to work data sets for each CA group, and writes them out.
  Created address spaces (SORT tasks) reads log data from work
  data sets instated of real log data sets. Even though, sort
  tasks allocate real log data sets dynamically provisionally for
  CA record registration in DBRC. If the log data sets are on
  tape, the same data set cannot be allocated in multiple address
  spaces at the same time due to OS limitations. To avoid the
  limitation, IMS HP Change Accumulation serializes log data set
  allocation and DBRC process in each sort task.
  
  With this enhancement, under certain conditions, without
  serialization for log data set allocation and DBRC process in
  the sort task.  Avoiding serialization improves overall
  processing performance.
  
  The IMS HP Change Accumulation message HPC0101E is
  incorrectly output as HPC101E in HPCPRINT DD, so it is
  corrected.
  

Problem conclusion

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:

  UI97945

Modules/Macros

• HPCA64   HPCAACRE HPCAAKIL HPCAALL0 HPCAALL1 HPCAALL2 HPCAATTA
  HPCABLD1 HPCABMGR HPCABRTN HPCABUFF HPCACM15 HPCACMGR HPCACMIL
  HPCACMM0 HPCACRD0 HPCACTLB HPCACUM0 HPCADRI1 HPCADRIV HPCADSP0
  HPCADYNA HPCAE150 HPCAEG03 HPCAEXTR HPCAEXTW HPCAFP   HPCAGET0
  HPCAINI0 HPCAITKB HPCALOGF HPCALOGR HPCALST0 HPCAMAIN HPCAMBLK
  HPCANOT2 HPCANOT3 HPCAOPN0 HPCAPIT  HPCAPRO0 HPCAPRO1 HPCAPRO2
  HPCARCAP HPCARGEN HPCARPTS HPCAS1   HPCAS1DR HPCASBM0 HPCASCHD
  HPCASPIL HPCASTA0 HPCASTA1 HPCASTA2 HPCAULOG HPCAXBKT HPCAXFER
  HPCAXMEM HPCAXRPT HPCAXSUM HPCAXTRC HPCSDIAG HPCUC15F HPCUC35F
  HPCURIOF HPCXITFF
  

Fix information

• Fixed component name

  IMS RCVR SOLUTN

• Fixed component ID

  5655V8600

Applicable component levels

• R210 PSY UI97945

     UP24/08/10 P F408  

Fix is available

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