"Comparison method violates its general contract!" Fatal Error During Mapping Validation in ODI 12c

(Doc ID 2189914.1)

Last updated on AUGUST 15, 2017

Applies to:

Oracle Data Integrator - Version 12.1.3.0.0 and later
Information in this document applies to any platform.

Symptoms

The following error is observed in Oracle Data Integrator (ODI) 12c, when trying to run a Mapping migrated from Oracle Warehouse Builder (OWB):

Failed to create OdiRef object for target: xxxxx.

Also, there are some fatal errors in the Mapping Validation window:

Severity -> Fatal Issue -> Comparison method violates its general contract!
Severity -> Fatal Issue -> Cannot determined if component KM is a match

Cause

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