For replicating information into PostgreSQL, you should ensure that the necessary prerequisites and configuration for your source database and PostgreSQL target have been completed properly. For more information, see:
When replicating from MySQL into PostgreSQL, see Section B.4.4, “MySQL Configuration for Heterogeneous Deployments” for specific heterogeneous information, and the general Section B.4, “MySQL Database Setup” general information.
When replicating from Oracle into PostgreSQL, see Section B.5, “Oracle Database Setup”.
For the PostgreSQL confoiguration, ensure you have followed the recommmendations in Section B.6, “PostgreSQL Database Setup”.