Update Statement of Table SNP_MAP_EXPR_REF Slows Down ODI Studio 12c Performance

(Doc ID 2379066.1)

Last updated on APRIL 04, 2018

Applies to:

Oracle Data Integrator - Version 12.2.1.0.0 to 12.2.1.2.6 [Release 12c]
Information in this document applies to any platform.

Symptoms

An update statement on the Oracle Data Integrator (ODI) repository takes a great deal of time to execute.  This causes severe performance issues in ODI Studio. Developments are slowed down, and the User Interface (UI) is difficult to use due to the latency.

The SQL statement of interest is:

UPDATE SNP_MAP_EXPR_REF set I_MAP_REF_PP = null;

The SNP_MAP_EXPR_REF table contains over 700,000 records and is still growing.

The update is done frequently and takes 15 - 20 seconds.

Changes

 

Cause

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