How to fix the Oracle error ORA-30957: cannot downgrade because there are XML indexes?

In this post, you’ll learn more about the Oracle ErrorORA-30957: cannot downgrade because there are XML indexes with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-30957: cannot downgrade because there are XML indexes

Reason for the Error ORA-30957: cannot downgrade because there are XML indexes

An attempt was made to downgrade a database that has XML indexes.

How to fix the Error ORA-30957: cannot downgrade because there are XML indexes ?

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

Drop all XML indexes before attempting the downgrade.