How to fix the Oracle error ORA-12088: cannot online redefine table “string”.”string” with unsupported datatype?

In this post, you’ll learn more about the Oracle ErrorORA-12088: cannot online redefine table “string”.”string” with unsupported datatype with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12088: cannot online redefine table “string”.”string” with unsupported datatype

Reason for the Error ORA-12088: cannot online redefine table “string”.”string” with unsupported datatype

An attempt was made to online redefine a table containing a LONG column, an ADT column, or a FILE column.

How to fix the Error ORA-12088: cannot online redefine table “string”.”string” with unsupported datatype ?

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

Do not attempt to online redefine a table containing a LONG column, an ADT column, or a FILE column.