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Status Submitted
Workspace DataStage
Created by Guest
Created on Jul 1, 2024

RELATED IDEAS

Improve the performance of Teradata Connector when doing BULK read

Teradata bulk export of ~7 million rows from Datastage using TD connector takes over ~30 minutes as compared on using TPT export (that is also executed on the DS engine) which only took around ~3-4 minutes.

The timing differences are significant, we would like to know if this is a known issue and if there's any settings that we can tune in TD connector so that the performance can be at least at par when exporting data via TPT scripts.

TS015371006_Tes...
TS015371006_TestResult_with_wo_RCP_50M_rows_in_vchar5.docx
 TS015371006_TestResult_with_wo_RCP_50M_rows_in_vchar5.docx
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TS015371006_TestResult_with_wo_RCP_50M_rows_in_vchar5.docx
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  • Guest
    Reply
    |     Jul 1, 2024

    As advise by IBM Support "But even in Bulk Mode (ie TPT API) TDConnector when READING only uses

    ncr::teradata::client::API::Connection::GetRow as opposes to ncr::teradata::client::API::Connection::GetBuffer.

    This explain the big differences in performance when average record size is small and negligible differences when record size is big. Network packet with standard MTU is 1500 bytes.

    At this stage, I can't see any configuration that we can do to improve the performance of TD Connector Bulk Read unless we switch to GetBuffer."

     

    Will there be future plans for TD connector stage to use 'GetBuffer' when doing bulk read

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