How to fix the Oracle error ORA-12047: PCT FAST REFRESH cannot be used for materialized view “string”.”string”?

In this post, you’ll learn more about the Oracle ErrorORA-12047: PCT FAST REFRESH cannot be used for materialized view “string”.”string” with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12047: PCT FAST REFRESH cannot be used for materialized view “string”.”string”

Reason for the Error ORA-12047: PCT FAST REFRESH cannot be used for materialized view “string”.”string”

PCT refresh is either not enabled on this materialized view or not possible after set of the base table changes since last refresh.

How to fix the Error ORA-12047: PCT FAST REFRESH cannot be used for materialized view “string”.”string” ?

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

Use just REFRESH FORCE, which will reinstantiate the entire table and try to pick the best refresh method on the materialized view Do explain_mview to look at the cause why PCT refresh is not possible on this materialized view