How to fix the Oracle error TNS-12626: TNS:bad event type?

In this post, you’ll learn more about the Oracle ErrorTNS-12626: TNS:bad event type with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12626: TNS:bad event type

Reason for the Error TNS-12626: TNS:bad event type

Cause: An attempt to register a connection for event notification failed because the event type is unknown.

How to fix the Error TNS-12626: TNS:bad event type ?

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

Action: Not normally visible to the user. For further details, turn on tracing and reexecute the operation and contact Oracle Customer Support.