How to fix the Oracle error ORA-30372: fine grain access policy conflicts with materialized view?

In this post, you’ll learn more about the Oracle ErrorORA-30372: fine grain access policy conflicts with materialized view with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30372: fine grain access policy conflicts with materialized view

Reason for the Error ORA-30372: fine grain access policy conflicts with materialized view

A fine grain access control procedure has applied a non-null policy to the query for the materialized view.

How to fix the Error ORA-30372: fine grain access policy conflicts with materialized view ?

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

In order for the materialized view to work correctly, any fine grain access control procedure in effect for the query must return a null policy when the materialized view is being created or refreshed. This may be done by ensuring that the usernames for the creator, owner, and invoker of refresh procedures for the materialized view all receive a null policy by the user-written fine grain access control procedures.