This document provides an overview of Postgres Plus Advanced Server and its features. It begins with introductions to PostgreSQL and PostGIS. It then discusses Postgres Plus Advanced Server's Oracle compatibility, performance enhancements, security features, high availability options, database administration tools, and migration toolkit. The document also provides information on scaling Postgres Plus Advanced Server through partitioning and infinite cache technologies. It concludes with summaries of the replication capabilities of Postgres Plus Advanced Server.