How to fix the Oracle error ORA-09959: IMON: deletion of a process failed.?

In this post, you’ll learn more about the Oracle ErrorORA-09959: IMON: deletion of a process failed. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09959: IMON: deletion of a process failed.

Reason for the Error ORA-09959: IMON: deletion of a process failed.

The IMON process was unable to delete a server process from its process ID array because no entry for the process could be found.

How to fix the Error ORA-09959: IMON: deletion of a process failed. ?

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

This is an internal error, contact ORACLE support.