How to fix the Oracle error ORA-25331: cannot downgrade because there are commit-time queue tables?

In this post, you’ll learn more about the Oracle ErrorORA-25331: cannot downgrade because there are commit-time queue tables with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-25331: cannot downgrade because there are commit-time queue tables

Reason for the Error ORA-25331: cannot downgrade because there are commit-time queue tables

An attempt was made to downgrade a database that has commit-time queue tables.

How to fix the Error ORA-25331: cannot downgrade because there are commit-time queue tables ?

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

Drop all commit-time queue tables before attempting the downgrade.