How to fix the Oracle error ORA-55456: no valid rules index for this model-rulebase combination?

In this post, you’ll learn more about the Oracle ErrorORA-55456: no valid rules index for this model-rulebase combination with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-55456: no valid rules index for this model-rulebase combination

Reason for the Error ORA-55456: no valid rules index for this model-rulebase combination

A valid rules index did not exist for specified combination of models and rulebases.

How to fix the Error ORA-55456: no valid rules index for this model-rulebase combination ?

You can fix this error in Oracle by following the below steps

Create a rules index for the specified models and rulebases combination, or use a combination of models and rulebases for which a rules index exists, and retry the operation. Also ensure that the rules index status matches the status for the rules index specified in the query.

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