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IT26008: DB2LOOK HAS DUPLICATE/INCORRECT COLUMN IN REFERENCES CLAUSE OF FOREIGN KEY DDL.

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APAR status

  • Closed as program error.

Error description

  • Starting in Db2 v10.5 fp9 and v11.1 fp3, db2look might have
    extra/incorrect columns in references clause of foreign key ddl.
    This can happen when a different schema exists with same name
    and constraint name. When recreating an environment with
    db2look, it will fail.
    
    This issue is to be fixed in the next released fixpack
    
    
    ----------------- db2look
    ----------------------------------------------
    ALTER TABLE "PROD    "."RE_RESS_COMP"
        ADD CONSTRAINT "R3R02R01" FOREIGN KEY
            ("MATRIC_RETR",
             "LF_RETRAITE")
        REFERENCES "PROD    "."RE_SUIVI_AS"
            ("MATRIC_RETR",
             "MATRIC_RETR",
             "LF_RETRAITE",
             "LF_RETRAITE")    --> Duplicate column.
        ON DELETE CASCADE
        ON UPDATE RESTRICT
        ENFORCED
        ENABLE QUERY OPTIMIZATION;
    
    
    Another symptom is SYSPROC.ADMIN_COPY_SCHEMA creating duplicate
    columns because it relies on db2look under the covers.
    
    Before calling SYSPROC.ADMIN_COPY_SCHEMA the constraint is
    defined as
    
    ALTER TABLE "DB2INST1  "."TAB1"
            ADD CONSTRAINT "F1" FOREIGN KEY
                    ("TAB2_ID")
            REFERENCES "DB2INST1  "."TAB2"
                    ("TAB2_ID")
            ON DELETE CASCADE
            ON UPDATE NO ACTION;
    
    After calling SYSPROC.ADMIN_COPY_SCHEMA constraint is defined as
    
    
    ALTER TABLE "DB2INST1 "."TAB1"
           ADD CONSTRAINT "F1" FOREIGN KEY
                   ("TAB2_ID")
           REFERENCES "DB2INST1 "."TAB2"
                   ("TAB2_ID",
                    "TAB2_ID")        <<<< additional duplicate
    column
           ON DELETE CASCADE
           ON UPDATE NO ACTION;
    

Local fix

  • Manually Correct it.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * db2look                                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Apply v11.1 M4 FP4 to DB2 server                             *
    ****************************************************************
    

Problem conclusion

  • First fixed in v11.1 M4 FP4
    

Temporary fix

  • See LOCAL FIX
    

Comments

APAR Information

  • APAR number

    IT26008

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-08-17

  • Closed date

    2022-06-10

  • Last modified date

    2022-06-10

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

    IT24545

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

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1"}]

Document Information

Modified date:
11 June 2022