This exam was more over job experience oriented one.
There are no particular book or information or material available that will help you pass this exam.
Oracle has mentioned some topics for the exam, but there is no specific book which will prepare you for the exam.This exam was not targetting any specific product like
Oracle Service Bus , WBI-MB etc
Only your experience will help you pass this exam.
Now Oracle has decommisioned this exam.
Oracle SOA Architect Certified Expert.
Oracle Certified Master, Java EE 5 Enterprise Architect certification
IBM Certified Rational Software Architect.
IBM Certified Service Oriented Architecture (SOA) - Associate.
IBM Websphere MQ 6.0 Certified - System Adminstrator
Sun Certified Web Component Developer for J2EE 5.0.
Sun Certified Java Programmer SE 5.0.