Querying an Oracle server v17
dblink_ora enables you to issue arbitrary queries to a remote Oracle server. It provides an OCI-based database link that enables you to SELECT, INSERT, UPDATE, or DELETE data stored on an Oracle system from EDB Postgres Advanced Server.
Calling dblink_ora functions
Describes how to call the dblink_ora functions
Connecting to an Oracle database
Describes how to create a link to an Oracle server