IC95993: INGEST: RUN TIME IS 32X WORSE THAN IMPORT WHEN TABLE HAS MANY UDTS

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Ingest can perform poorly when the INGEST command omits the
    field list and specifies a target table that has a lot of
    user-defined data types (UDTs).  For example, ingesting 100K
    rows into a 300-column table that has 75 columns whose type is a
    UDT took 32 times as long as import (16 minutes vs. 30 seconds).
    

Local fix

  • There are two possible work arounds:
    
    (1) Define an explicit field list on the INGEST command.  For
    example:
    
    INGEST FROM FILE my_file.del FORMAT DELIMITED
    (
       $field1 INTEGER EXTERNAL,
       $field2DECIMAL(5,2) EXTERNAL,
       ...
       $fieldn CHAR(10)
    )
        INSERT INTO my_table_with_many_udts;
    
    (2) Modify the table to use built-in types instead of
    user-defined types.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Ingest users using UDTs on DB2 V10.1 Fixpack 2 or lower.     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 for LUW Version 10.1 Fixpack 3 or higher.     *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 for LUW Version 10.1 Fixpack 3.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC95993

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-09-16

  • Closed date

    2013-10-07

  • Last modified date

    2013-10-07

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

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

    IC97541

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RA10 PSN

       UP



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Document information


More support for:

DB2 for Linux, UNIX and Windows

Software version:

10.1

Reference #:

IC95993

Modified date:

2013-10-07

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