Making sure mission critical databases are highly available (HA) is the challenge IT departments are presented with because of competition and constant demand for information. HA solutions enable IT to deliver measurable value in a variety of forms, including:

• Seamless failover for unplanned system component failures
  
• Disaster Recovery with minimal service interruption
  
• Optimized performance for both OLTP and Query/Reporting

This paper discusses the failover and redundancy capabilities of specific HA products that can be used in conjunction with PostgreSQL, Postgres Plus, and the Oracle compatible database Postgres Plus Advanced Server.