ORA-28523: ORACLE and heterogeneous agent

admin

ORA-28523: ORACLE and heterogeneous agent are incompatible versions
Cause: An operation on adatabase link attempted to connect to a non-Oracle
system, but the ORACLE instance and the agent process for the non-Oracle system
are incompatible.
Action: Ask your DBA toconfirm configuration of both the ORACLE instance
and the agent. Additional information on the version incompatibility is loggedin
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.