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

Oracle Error Message

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

Reason for the Error

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

Solution

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

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