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PI79570: WHEN THERE'S A PREDICATE IN THE VIEW AND REFERENCING THE VIEW INTHE QUERY WITH DIFFERENT PREDICATE, GETTING SQLCODE -104

A fix is available

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APAR status

  • Closed as program error.

Error description

  • when there's a predicate in the VIEW and referencing the view in
    the query with different predicate, getting sqlcode -104
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 11 for z/OS users who use IBM DB2    *
    *                 Analytics Accelerator.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: SQLCODE -104 is issued when a query     *
    *                      is accelerated and the query            *
    *                      satisfies the following conditions:     *
    *                      1. The query references a view with     *
    *                         UNION.                               *
    *                      2. The query contains a local           *
    *                         predicate which can prune one of     *
    *                         the legs of UNION in the view.       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    SQLCODE -104 is issued when a query is accelerated and
    the query satisfies the following conditions:
      1. The query references a view with UNION.
      2. The query contains a local predicate which can prune
         one of the legs of UNION in the view.
      For example:
       CREATE TABLE T1(C0 INTEGER, C1 CHAR(5));
    
       CREATE VIEW V1 (C0, C1 ) AS
                  SELECT C0 , C1
                  FROM T1
                  WHERE  C1 = 'A'
                UNION
                  SELECT C0+1, C1
                  FROM T1
                  WHERE  C1 = 'N'
                ;
    
       SET CURRENT QUERY ACCELERATION = ALL;
       SELECT  COUNT(*)
       FROM V1
       WHERE C1 ='A'
       FOR FETCH ONLY;
    
    ADDITIONAL KEYWORDS:
      IDAAV4R1/K IDAAV5R1/K IDAAV6R1/K
      SQLCODE104 SQLSQLVIEW SQLUNION SQLPRUNING
    

Problem conclusion

  • With the fix of PI79570, the query referencing View with
    UNION will be offloaded successfully.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI79570

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-04-06

  • Closed date

    2017-05-10

  • Last modified date

    2017-06-02

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

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

    UI47163

Modules/Macros

  • DSNXOBAC DSNXONZC
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RB10 PSY UI47163

       UP17/06/01 P F705

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.

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Document Information

Modified date:
02 June 2017