PI20026: INCORRECT DOVF CI POINTERS ARE SET AFTER RELOADING BY FPA

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When a UOW uses two DOVF CIs just after reloading an area by
  FPA RELOAD, the "RBA of current overflow CI" pointer of the
  first DOVF CI is null (X'00000000').  Due to this, the remaining
  empty DOVF CIs in the UOW are not used and the succeeding
  overflowed segments in the UOW will be stored into IOVF CIs.
  
  This problem occurs only in UOWs that use two DOVF CIs just
  after reloading an area. Therefore, this problem does not occur
  in UOWs that use no DOVF CI, one DOVF CI, and more than two
  DOVF CIs just after reloading an area.
  
  The FPA Analyze function and FPO Online Pointer Checker utility
  did not check the integrity of "RBA of current overflow CI"
  pointer of the DOVF CI.
  
  The Online Expert Reorganization (OER) utility or the High-Speed
  DEDB Direct Reorganization Utility (HSReorg) correctly sets
  the "RBA of current overflow CI" pointer of the first DOVF CI.
  To resolve this problem before applying the PTF, perform a
  reorganization with the OER utility or HSReorg utility for the
  area. No additional operation is needed after applying the PTF.
  

Local fix

• If the incorrect DOVF CI pointers are found by one of the
  following methods, you can run the Online Expert Reorganization
  utility or the High-Speed DEDB Direct Reorganization Utility for
  the UOWs to fix the DOVF CI pointers.
   - After reloading the areas, run the FPA ANALYZE function or
     Online Pointer Checker utility. The incorrect DOVF CIs exist
     in some UOWs if the UOW report shows there are UOWs that
     use IOVF CIs even though one or more DOVF CIs are not used.
   - Run the FPA ANALYZE function with the RDOVFFS parameter or
     the FPO Online Pointer Checker function with the EXC_RDOVFFS
     parameter. The incorrect DOVF CIs might exist in some UOWs
     if the UOWs use IOVF CIs even though the DOVF free space is
     considerably large and the UOWs are included in the UOW
     Exception report.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of HPFPU Fast Path Advanced Tool   *
  *                 and Fast Path Online Tools in Fast Path      *
  *                 Solution Pack Version 1 Release 3            *
  *                 (FMID: HAHQ130).                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: FPA Reload function sets first DOVF CI  *
  *                      pointers as null when a UOW uses two    *
  *                      DOVF CIs.                               *
  *                                                              *
  *                      The FPA Analyze function and FPO Online *
  *                      Pointer Checker utility do not check    *
  *                      the integrity of "RBA of current        *
  *                      overflow CI" pointer of the DOVF CI.    *
  ****************************************************************
  * RECOMMENDATION: Apply the maintenance for this APAR.         *
  ****************************************************************
  When a UOW uses two DOVF CIs just after reloading an area by
  FPA Reload, the "RBA of current overflow CI" pointer of the
  first DOVF CI is null (X'00000000').  Due to this, the remaining
  empty DOVF CIs in the UOW are not used and the succeeding
  overflowed segments in the UOW will be stored into IOVF CIs.
  
  This problem occurs only in UOWs that use two DOVF CIs just
  after reloading an area. Therefore, this problem does not occur
  in UOWs that use no DOVF CI, one DOVF CI, and more than two
  DOVF CIs just after reloading an area.
  
  The FPA Analyze function and FPO Online Pointer Checker utility
  did not check the integrity of "RBA of current overflow CI"
  pointer of the DOVF CI.
  
  The Online Expert Reorganization (OER) utility or the High-Speed
  DEDB Direct Reorganization Utility (HSReorg) correctly sets
  the "RBA of current overflow CI" pointer of the first DOVF CI.
  To resolve this problem before applying the PTF, perform a
  reorganization with the OER utility or HSReorg utility for the
  area. No additional operation is needed after applying the PTF.
  

Problem conclusion

• The FPA Reload function has been modified to set correct "RBA of
  current overflow CI" pointer of the first DOVF CI.
  
  The FPA Analyze function and FPO Online Pointer Checker utility
  have been modified to check the integrity of "RBA of current
  overflow CI" pointer of the DOVF CI.
  When
  
  ========================
  = DOCUMENTATION CHANGE =
  ========================
  The IMS Fast Path Solution Pack for z/OS Version 1 Release 3
  IMS High Performance Fast Path Utilities User's Guide
  (SC19-4010-01).
  
  For the documentation changes made by this APAR, see
  http://www-304.ibm.com/support/docview.wss?uid=swg27041865
  

Temporary fix

Comments

• ×**** PE16/02/17 FIX IN ERROR. SEE APAR PI56179  FOR DESCRIPTION
  

APAR Information

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

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

  UI26904

Modules/Macros

• FPXACIA0 FPXAERR0 FPXAERR1 FPXAPER0 FPXAPER1
  FPXARPP0 FPXAVSM0 HFPA1DC0 HFPA1P10 HFPKFRU0 HFPKSEG0 HFPTHDC0
  HFPTHMN0 HFPWMTT0
  

Fix information

• Fixed component name

  IMS FP SOLUTION

• Fixed component ID

  5655W1400

Applicable component levels

• R130 PSY UI26904

     UP15/04/23 P F504

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.