Oracle Maximum Availability Architecture(MAA) is Oracle’s best practices based on proven Oracle high availability technologies and recommendations. The goal of MAA is to remove the complexity in designing the optimal high availability architecture;
http://www.oracle.com/technology/deploy/availability/htdocs/maa.htm
http://www.oracle.com/technology/deploy/availability/htdocs/FNF_CaseStudy.html
Extract(Read) > Transform(Test&Apply) > Load(Learn) Blog 
Building a Highly Available and Disaster-Proof Architecture
Click to access S281208_Smith.pdf
Case Study: Maximum Availability Architecture (MAA) Implementation for Fidelity National Financial
Click to access FIS_FNF_OracleMAA_CaseStudy_OpenWorld%202006.pdf
Oracle Maximum Availability Architecture(MAA) Best Practices
http://www.oracle.com/technology/deploy/availability/htdocs/maa.htm
Oracle® Database High Availability Best Practices 10g Release 2 (10.2)
http://download.oracle.com/docs/cd/B19306_01/server.102/b25159/toc.htm
Oracle® Database High Availability Overview 10g Release 2 (10.2)
http://download.oracle.com/docs/cd/B19306_01/server.102/b14210/toc.htm