How to fix the Oracle error ORA-25342: cannot downgrade because there are apply processes for user buffered messages?

In this post, you’ll learn more about the Oracle ErrorORA-25342: cannot downgrade because there are apply processes for user buffered messages with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-25342: cannot downgrade because there are apply processes for user buffered messages

Reason for the Error ORA-25342: cannot downgrade because there are apply processes for user buffered messages

An attempt was made to downgrade a database that has apply process for user-buffered messages.

How to fix the Error ORA-25342: cannot downgrade because there are apply processes for user buffered messages ?

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

Drop all the apply processes for user-buffered messages before attempting the downgrade.