How to fix the Oracle error TNS-12591: TNS:event signal failure?

In this post, you’ll learn more about the Oracle ErrorTNS-12591: TNS:event signal failure with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12591: TNS:event signal failure

Reason for the Error TNS-12591: TNS:event signal failure

Cause: The TNS software is unable to signal an event occurrence.

How to fix the Error TNS-12591: TNS:event signal failure ?

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

Action: For further details, turn on tracing and reexecute the operation. If error persists, contact Oracle Customer Support.