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

Cause: 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.

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

Error Type: ORA

• Additional information for ORA-27550: Target ID protocol check failed. tid vers=number, type=number, remote instance number=number, local instance number=number27550
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