How to fix the Oracle error QSM-03117: Cannot tune the materialized view to be fast refreshable?

In this post, you’ll learn more about the Oracle ErrorQSM-03117: Cannot tune the materialized view to be fast refreshable with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

QSM-03117: Cannot tune the materialized view to be fast refreshable

Reason for the Error QSM-03117: Cannot tune the materialized view to be fast refreshable

The materialized view could not be tuned or decomposed to be fast refreshable.

How to fix the Error QSM-03117: Cannot tune the materialized view to be fast refreshable ?

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

Run the dbms_mview.explain_mview to find out the reason.