Oracle Error Message
ORA-28543: Error initializing apply connection to non-Oracle system
Reason for the Error
Attempt to initialize connection to non-Oracle for heterogeneous replication failed.
Solution
Check if the listener used to connect to the gateway is up and is correctly configured. Make sure that the database link used has been configured correctly and, if a tnsnames alias has been used in the database link definition, make sure that the configuration of the entry in tnsnames.ora has been done correctly.