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

Last updated on SEPTEMBER 19, 2023

Applies to:

Oracle Data Integrator - Version 12.2.1.0.0 to 12.2.1.2.8 [Release 12c]
Information in this document applies to any platform.

Symptoms

When executing a large feed from Big Data Appliance (BDA) to Oracle DB using LKM Hive to Oracle OLH-OSCH, slow performance is observed.

When the mapping is executed, the "Create Hive Work Table" step of the LKM Hive to Oracle OLH-OSCH is slow. 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 is used and it is inserting all those records along with the staging table creation DDL.

Cause

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