PP39382: SPACE MAP NOT UPDATED PROPERLY FOR DATA PAGES WITH PGMAXID=X'7F'

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• THE FILE PAGESET SPACE MAP PAGE IS NOT PROPERLY UPDATED WHEN
  DELETES ARE PERFORMED FOR ROWS IN A DATA PAGE HAVING PGMAXID =
  X'7F' (THE MAXIMUM NUMBER OF ID MAP ENTRIES FOR A PAGE).
  THE ID MAP ENTRY AND THE 'HOLE CHAIN' ARE UPDATED TO REFLECT THE
  DELETED ROW(S) BUT BECAUSE THE SPACE MAP IS NOT, ANY INSERTS OF
  THE SAME OR SMALLER LENGTH ROWS DO NOT USE THESE HOLES.  THIS
  RESULTS IN WASTED SPACE IN THE PAGESET.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: ALL                                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: INSERTS TO A TABLESPACE ARE NOT PLACED  *
  *                      INTO PAGES WITH ENOUGH FREE SPACE AND   *
  *                      FREE ID-MAP ENTRIES IF MAXIMUM ID-MAP   *
  *                      ENTRIES HAS EVER BEEN REACHED.          *
  ****************************************************************
  * RECOMMENDATION: APPLY CORRECTIVE FIX FOR THIS APAR           *
  ****************************************************************
  THE TABLESPACE SPACEMAP ENTRY FOR A PAGE IS NOT UPDATED TO
  REFLECT SPACE IN A PAGE IF MAXIMUM ID-MAP ENTRIES IS REACHED.
  

Problem conclusion

• DSNITDLE IS UPDATED TO TEST FOR THE FIRST DELETE TO A PAGE IF
  PGMAXID = 7F (MAX ID-MAP). THE AMOUNT OF FREE SPACE IS TESTED
  AND THE SPACEMAP ENTRY FOR THE PAGE IS UPDATED TO INDICATE
  THE SPACE AVAILABLE.
  

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:

  UP55138

Modules/Macros

•    DSNITDLE
  

Fix information

• Fixed component name

  5740 IBM DATABA

• Fixed component ID

  5740XYR00

Applicable component levels

• R102 PSY UP55138

     UP85/02/06 P DLL5 F503

Fix is available

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