Very Large Databases and High Availability Evaluating Replication Options

A nice article covering some Oracle replication options, including those offered by Oracle, Veritas, and Shareplex, which I've never heard of!

Very Large Databases and High Availability Evaluating Replication Options: "Many of the world's critical databases that support mind-boggling transactions, whether it is EBay or Amazon, employ replicated database features, such that the failure of any component of a single database, including DISK, CPU, RAM or NETWORK, will not have a catastrophic failure on the entire system. In addition to replication, systems are developed to allow in-flight transactions to be automatically reconnected to another fully replicated database management system, which is most often located at an entirely different geographical location than the primary database. However, replication involves much more than just setup, as marriage involves much more than a honeymoon to survive, and besides designing the applications for in-flight transactions requires meticulous planning. This is where third party software will come into play. In this article, let us examine available replication options that are viable for your critical database."