Oracle Error ORA-39268: Cannot alter a real column to make it virtual or vice versa.

Oracle Error Message

ORA-39268: Cannot alter a real column to make it virtual or vice versa.

Reason for the Error

DBMS_METADATA_DIFF was comparing two table columns, one virtual, one real. There is no SQL ALTER statement to make a virtual column real or vice versa.

Solution

The difference cannot be eliminated with an SQL ALTER statement.