Oracle Solution for Error ora-12091

ORA-12091: cannot online redefine table "string"."string" with materialized views

What triggered the Error:

An attempt was made to online redefine a table that had materialized views defined on it or had a materialized view log defined on it or is a master.

What should we do to fix it:

Drop all materialized views and materialized view logs before attempting to online redefine the table.