How to fix the Oracle error ORA-09960: Unable to establish signal handler for termination signal?

In this post, you’ll learn more about the Oracle ErrorORA-09960: Unable to establish signal handler for termination signal with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-09960: Unable to establish signal handler for termination signal

Reason for the Error ORA-09960: Unable to establish signal handler for termination signal

ORACLE was unable to set up a handler for the signal used to notify it that the instance was shutting down.

How to fix the Error ORA-09960: Unable to establish signal handler for termination signal ?

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

This is an internal error, contact ORACLE support.