JR45498: ORACLE CONNECTOR JOB WITH LARGE SCHEMA/ARRAYSIZE FAILS WITH APT_BADALLOC WHEN USING BIG BUFFER API

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • An Oracle Connector job with a large schema and array size
    (specific case was 200+ NVarChar columns with no length set,
    getting default of 4000 bytes) fail with APT_BadAlloc when using
    Big Buffer API (new to 9.1).  Job completes when using a smaller
    schema and/or array size or disabling Big Buffer API.
    

Local fix

  • Work Around: Disable the big buffer APIs in V9.1
    

Problem summary

  • Big Buffer API uses a single buffer for an entire array of
    records, so if the array size and the record size are large
    enough, the connector will attempt to allocate a buffer larger
    than 2 GB. This size overflows the data type used to specify the
    length of the buffer, so this allocation cannot be allowed to
    happen.
    

Problem conclusion

  • If the Big Buffer initialization code determines that a buffer
    greater than 2 GB is about to be allocated, the connector will
    revert to the pre-9.1 method of transferring data with the
    connector framework.
    

Temporary fix

  • Disable Big Buffer. Reduce the schema size (possibly by
    specifying lengths for strings). Reduce the array size.
    

Comments

APAR Information

  • APAR number

    JR45498

  • Reported component name

    WIS DATASTAGE

  • Reported component ID

    5724Q36DS

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-01-22

  • Closed date

    2013-02-13

  • Last modified date

    2013-02-13

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

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

Fix information

  • Fixed component name

    WIS DATASTAGE

  • Fixed component ID

    5724Q36DS

Applicable component levels

  • R910 PSY

       UP



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Document information


More support for:

InfoSphere DataStage

Software version:

9.1

Reference #:

JR45498

Modified date:

2013-02-13

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