How to fix the Oracle error ORA-12855: cannot run parallel or insert direct load in a loopback?

In this post, you’ll learn more about the Oracle ErrorORA-12855: cannot run parallel or insert direct load in a loopback with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-12855: cannot run parallel or insert direct load in a loopback

Reason for the Error ORA-12855: cannot run parallel or insert direct load in a loopback

A loopback was created in the transaction before this operation.

How to fix the Error ORA-12855: cannot run parallel or insert direct load in a loopback ?

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

Do not use loopback when using pdml or insert direct load.