文档解释
ORA-12057: materialized view “string”.”string” is INVALID and must complete refresh
Cause: The status of the materialized view was INVALID and an attempt was made to fast refresh the materialized view.
Action: Perform a complete refresh of the materialized view. Check the value of the STATUS column in dba_mviews, all_mviews, or user_mviews to verify that the materialized view is VALID after the complete refresh.
ORA-12057: materialized view “string”.”string” is INVALID and must complete refresh是一个数据库错误，它指示使用的材料视图是无效的，并且必须完成刷新才能继续进行操作。
官方解释
案例：例如，如果重命名索引或删除索引，则可能会意外使材料视图变为无效。
