How to fix the Oracle error ORA-09839: removeCallback: callback port is not in the callback set.?

In this post, you’ll learn more about the Oracle ErrorORA-09839: removeCallback: callback port is not in the callback set. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09839: removeCallback: callback port is not in the callback set.

Reason for the Error ORA-09839: removeCallback: callback port is not in the callback set.

The port to be removed to the callback list is not in the callback port set.

How to fix the Error ORA-09839: removeCallback: callback port is not in the callback set. ?

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

Internal error. Contact Oracle support.