How to fix the Oracle error ORA-12004: REFRESH FAST cannot be used for materialized view “string”.”string”?

In this post, you’ll learn more about the Oracle ErrorORA-12004: REFRESH FAST 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-12004: REFRESH FAST cannot be used for materialized view “string”.”string”

Reason for the Error ORA-12004: REFRESH FAST cannot be used for materialized view “string”.”string”

The materialized view log does not exist or cannot be used. PCT refresh is also not enabled on the materialized view

How to fix the Error ORA-12004: REFRESH FAST cannot be used for materialized view “string”.”string” ?

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

Use just REFRESH, which will reinstantiate the entire table. If a materialized view log exists and the form of the materialized view allows the use of a materialized view log or PCT refresh is possible after a given set of changes, REFRESH FAST will be available starting the next time the materialized view is refreshed.