How to fix the Oracle error ORA-09835: addCallback: callback port is already in a set.?

In this post, you’ll learn more about the Oracle ErrorORA-09835: addCallback: callback port is already in a set. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09835: addCallback: callback port is already in a set.

Reason for the Error ORA-09835: addCallback: callback port is already in a set.

The port to be added to the callback list is already in a port set.

How to fix the Error ORA-09835: addCallback: callback port is already in a set. ?

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

Internal error. Contact Oracle support.