The typical study guide for OCMJEA doesn't cover "all" the material in detail, most are summary of key points with few examples.
I haven't read the v6 study guide by Allen but from the older version, I found it mediocre at best. However, you can use the v5 guide as a companion book.
- Cade, M. & Sheil, H. Sun Certified Enterprise Architect for Java EE Study Guide 2e (2010) Prentice Hall
Depending on your background on the various tiers (presentation/web, business, integration/persistence), consulting books on these areas will be your best option.
Remember the architect exam focuses on the 5W more than the how (for developer).
For design patterns, go with the book Real World Java EE Patterns by Adam Bien. Other pattern book worth reading are GoF book and Core J2EE patterns. The head first patterns covers the common GoF patterns.
- Bien, A. Real World Java EE Patterns: Rethinking Best Practices (2009) lulu.com (I believe there is a 2e out, 2009 was the 1st ed)
- Gamma, E., Helm, R., Johnson, R. & Vlissides, J. Design Patterns: Elements of Reusable Object-Oriented Software (1994) Addison-Wesley
- Freeman, E., Bates, B., Sierra, K. & Robson, E. Head First Design Patterns (2004) O'Reilly
- Alur, D., Malks, D. & Crupi, J. Core J2EE Patterns: Best Practices and Design Strategies 2e (2003) Prentice Hall
Other areas such as EJB, servlets, web services, JMS, JSF, there books on these as well.
- Panda, D., Rahman, R. & Lane, D. EJB 3 in Action (2007) Manning (there a 2e out, 2007 was 1st ed)
- Kalin, M. Java Web Services: Up and Running (2009) O'Reilly
- Chappell, D. & Jewell, T. Java Web Services (2002) O'Reilly
- Basham, B., Sierra, K. & Bates, B. Head First Servlets & JSP 2e (2008) O'Reilly