I am researching how to use JCA (J2EE Connector Architecture) to integrate with ERP, EIS system. Here is my colletions.

J2EE Connector Overview:
The J2EE Connector architecture defines a standard architecture for connecting the J2EE platform to heterogeneous EISs. Examples of EISs include ERP, mainframe transaction processing, database systems, and legacy applications not written in the Java programming language. By defining a a set of scalable, secure, and transactional mechanisms, the J2EE Connector architecture enables the integration of EISs with application servers and enterprise applications

Sun: J2EE Connector Architecture
Understanding JCA transactions
Connect the enterprise with the JCA
Some musings on JCA (Java Connector Architecture)
Develop inbound connectors with JCA 1.5
Using Resource Adapters outside of EE containers
Connectors on JBoss
JCA at Oracle Containers for J2EE (OC4J) plus BEA Tuxedo 8.1