How to fix the Oracle error ORA-39270: Cannot alter a LOB column to another data type.?

In this post, you’ll learn more about the Oracle ErrorORA-39270: Cannot alter a LOB column to another data type. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-39270: Cannot alter a LOB column to another data type.

Reason for the Error ORA-39270: Cannot alter a LOB column to another data type.

DBMS_METADATA_DIFF was comparing two table columns, the first of type CLOB, NCLOB or BLOB, the second of some other data type. There is no SQL ALTER statement to change the data type of a LOB column.

How to fix the Error ORA-39270: Cannot alter a LOB column to another data type. ?

You can fix this error in Oracle by following the below steps

The difference cannot be eliminated with an SQL ALTER statement.