ODI LKM Hive To Oracle OLH-OSCH - "Create Hive Work Table " Step Performance Issue (Doc ID 2234190.1)

Last updated on MAY 12, 2017

Applies to:

Oracle Data Integrator - Version 12.2.1.0.0 and later
Information in this document applies to any platform.

Symptoms

Slow performance when executing a large feed from BDA to Oracle DB using LKM Hive to Oracle OLH-OSCH.

When the mapping is executed, performance issue is observed in the "Create Hive Work Table step" of the LKM Hive to Oracle OLH-OSCH. It takes more than 24 hours to finish for large feed of around 200 million records of total  250GB data. The generated code shows CREATE TABLE AS SELECT statement used and so inserting all those records along with the staging table creation DDL.

Cause

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