ORA-23401

Error: ORA-23401: materialized view "string"."string" does not exist

Causa: A materialized view name was given to DBMS_MVIEW.REFRESH that is not in SYS.SNAP$ or its associated views.

Acción: Provide a materialized view name that is in SYS.SNAP$, ALL_MVIEWS or USER_MVIEWS.