How to fix the Oracle error ORA-27550: Target ID protocol check failed. tid vers=string, type=string, remote instance number=string, local instance number=string?

In this post, you’ll learn more about the Oracle ErrorORA-27550: Target ID protocol check failed. tid vers=string, type=string, remote instance number=string, local instance number=string with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-27550: Target ID protocol check failed. tid vers=string, type=string, remote instance number=string, local instance number=string

Reason for the Error ORA-27550: Target ID protocol check failed. tid vers=string, type=string, remote instance number=string, local instance number=string

The local Oracle Real Application Cluster instance and remote instance are running with incompatible implementation of the inter-instance IPC protocol library. A misconfiguration or installation error occurred.

How to fix the Error ORA-27550: Target ID protocol check failed. tid vers=string, type=string, remote instance number=string, local instance number=string ?

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

Check additional error messages in the alert log and the process trace file.