Oracle Error ORA-22340: cannot string type “string”.”string”. Dependent tables must be upgraded to latest version

Oracle Error Message

ORA-22340: cannot string type “string”.”string”. Dependent tables must be upgraded to latest version

Reason for the Error

An attempt was made to reset the version, drop or alter a type when the data in dependent table has not been upgraded to the latest version.

Solution

Use the ALTER TABLE UPGRADE INCLUDING DATA statement to upgrade the data in the dependent tables then resubmit the statement.