Oracle Error Message
ORA-02303: cannot drop or replace a type with type or table dependents
Reason for the Error
An attempt was made to drop or replace a type that has type or table dependents.
Solution
For DROP TYPE, drop all type(s) and table(s) depending on the type and then retry the operation, or use the FORCE option. For CREATE TYPE, drop all type(s) and table(s) depending on the type and then retry the operation, or drop all table(s) depending on the type and retry with the FORCE option.