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ARCHIVED: Pooled JVM in CICS Transaction Server V3 by Derek Wen, Qian Zhang, Guo Qiang Li, Yun Peng Ge, John Taylor, Tom Grieve, Scott Clee, George Burgess, Chris Rayns

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Evolving a heritage application using Java
In this chapter, we take a COBOL heritage application and describe ways that you can enhance it using the JCICS API. The stages of evolution are:
1. Implement a Web interface to coexist alongside the original 3270 display, which opens up the underlying business logic to a generation of Internet clients.
2. Fully implement the back-end business logic using Java, which introduces a pluggable data storage component for future scalability.
3. Implement a DB2 back-end, and migrate the application data from ...

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