How to fix the Oracle error ORA-28523: ORACLE and heterogeneous agent are incompatible versions?

In this post, you’ll learn more about the Oracle ErrorORA-28523: ORACLE and heterogeneous agent are incompatible versions with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-28523: ORACLE and heterogeneous agent are incompatible versions

Reason for the Error ORA-28523: ORACLE and heterogeneous agent are incompatible versions

An operation on a database link attempted to connect to a non-Oracle system, but the ORACLE instance and the agent process for the non-Oracle system are incompatible.

How to fix the Error ORA-28523: ORACLE and heterogeneous agent are incompatible versions ?

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

Ask your DBA to confirm configuration of both the ORACLE instance and the agent. Additional information on the version incompatibility is logged in trace (*.TRC) files, the ORACLE instance and the agent, and in the ORACLE instance’s alert log. Check the documentation for your agent to find out which releases of the Oracle Server are supported.