How to fix the Oracle error QSM-01022: a more optimal materialized view than string was used to rewrite?

In this post, you’ll learn more about the Oracle ErrorQSM-01022: a more optimal materialized view than string was used to rewrite with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-01022: a more optimal materialized view than string was used to rewrite

Reason for the Error QSM-01022: a more optimal materialized view than string was used to rewrite

Query Rewrite always chooses the most optimal materialized view based on certain parameters, such as cardinality of the materialized view, number of joins etc. The materialized view specified was found to be less optimal.

How to fix the Error QSM-01022: a more optimal materialized view than string was used to rewrite ?

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

To force using a materialized view, consider using a rewrite hint.