In this post, you’ll learn more about the Oracle ErrorTNS-12622: TNS:event notifications are not homogeneous with the details on why you receive this error and the possible solution to fix it.
Oracle Error Description
TNS-12622: TNS:event notifications are not homogeneous
Reason for the Error TNS-12622: TNS:event notifications are not homogeneous
Cause: An attempt to register a connection for event notification failed because the event notification type conflicts with existing registrations.
How to fix the Error TNS-12622: TNS:event notifications are not homogeneous ?
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.