How to fix the Oracle error TNS-12660: Encryption or crypto-checksumming parameters incompatible?

In this post, you’ll learn more about the Oracle ErrorTNS-12660: Encryption or crypto-checksumming parameters incompatible with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

TNS-12660: Encryption or crypto-checksumming parameters incompatible

Reason for the Error TNS-12660: Encryption or crypto-checksumming parameters incompatible

Cause: One side of the connection specified “REQUIRED” for encryption or crypto-checksumming, while the other side specified “REJECTED”.

How to fix the Error TNS-12660: Encryption or crypto-checksumming parameters incompatible ?

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

Action: Change the “REQUIRED” side to “REQUESTED” if the you want encryption or crypto-checksumming to be optional, or change the “REJECTED” side to “ACCEPTED” if you do not want the service to be optional.