Performance Issues With Sem_apis.create_entailment

(Doc ID 1462394.1)

Last updated on FEBRUARY 08, 2017

Applies to:

Oracle Spatial - Version 11.2.0.1 and later
Information in this document applies to any platform.

Symptoms

Using part of the NCTI ontology which has around 3070 assertions with “someValuesFrom”

Trying to create an Entailment (Rules Index) it takes 100% CPU and never ends, the process has to be killed.

This is the command used:

EXECUTE sem_apis.create_entailment('atest_RI', sem_models('NCIT_ANATOMY_MODULE'), sem_rulebases('OWLPRIME'),sem_apis.REACH_CLOSURE, 'SVFH','INC=T DOP=4 RAW8=T HASH_PART=32');

Cause

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