In this post, you’ll learn more about the Oracle ErrorORA-32300: cannot drop a secondary materialized view “string”.”string” with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
ORA-32300: cannot drop a secondary materialized view “string”.”string”
Reason for the Error ORA-32300: cannot drop a secondary materialized view “string”.”string”
An attempt was made to drop a materialized view of a nested table column’s storage table.
How to fix the Error ORA-32300: cannot drop a secondary materialized view “string”.”string” ?
You can fix this error in Oracle by following the below steps
Drop the materialized view that contains the nested table column. This will implicitly drop all secondary materialized views.