DB2 FOR LUW / DB2FORLUW / B10 - DB2

When there is a constraint defined on a table and a query makes
use of the constraint for data partition elimination, a
dependency
on the constraint should be recorded for the query package.  Db2
failed to record the dependency.  The result is that a row
inserted
after dropping the constraint, that would have violated this
constraint,
may not be returned by the query.  For example:

    CREATE TABLE T ( C1 INT NOT NULL, C2 INT NOT NULL )
             PARTITION BY RANGE(C2)
             (PART "P01" STARTING(1) ENDING(10),
              PART "P02" STARTING(11) ENDING(20) );

    CREATE INDEX I ON T ( C2 ASC, C1 ASC) PARTITIONED;

    ALTER TABLE T
      ADD CONSTRAINT C CHECK (C2 BETWEEN 1 AND 10)
      ENFORCED ENABLE QUERY OPTIMIZATION;

    -- Returns 0 rows as expected since table is empty.  Query
    -- package is stored in the dynamic package cache
    SELECT * FROM T WHERE C1 = 99;

    C1          C2
    ----------- -----------
      0 record(s) selected.

    -- Drop constraint, this should invalidate dynamic package
    ALTER TABLE T DROP CONSTRAINT C;

    -- Insert value outside of dropped constraint;
    INSERT INTO T VALUES ( 99, 11);

    -- Same query as before, now it should return the newly
    -- inserted row, but does not because Db2 failed to
    -- record dependency on the constraint
    SELECT * FROM T WHERE C1 = 99;

    C1          C2
    ----------- -----------
      0 record(s) selected.

****************************************************************
* USERS AFFECTED:                                              *
* ALL                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
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* RECOMMENDATION:                                              *
* Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
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For static queries (e.g. embedded C or SQL procedures), manually
rebind the corresponding package(s).  For dynamic queries,
either flush the dynamic package cache (FLUSH PACKAGE CACHE
DYNAMIC), or close and re-establish database connection.

keiner bekannt / siehe Local-Fix

Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:

12.04.2019
16.01.2020
16.01.2020