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GVB Subrahmanyam

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Top Stories by GVB Subrahmanyam

BEA's name is synonymous with the application server. Most applications running on Unix in North America run on BEA's WebLogic server, particularly financial apps. The current stable WebLogic 8.1 version does a lot more than earlier versions. Migrating to new versions is always challenging and risky, but is done for efficiency and new capabilities, and to stay current with a vendor's products and support. Most applications developed on the WebLogic 6.1 used JDK 1.3 or earlier. A move from WebLogic 6.1 to 8.1 means making our applications compatible with JDK 1.4.1 or higher since WebLogic 8.1 shipped with JDK 1.4. Most of the common migration hazards are discussed at bea.com. I am going to share few personal observations. These will be our discussion points. 6.1 to 8.1 migration, the current application scenario Common upgrade issues Getter and setter methods Serial... (more)

Reference Architecture for Securing Web Services in a Heterogeneous Environment

Web Services have played a key role in integrating heterogeneous applications, particularly in cross domains. As part of identity management, Security Token Services are used for request and response tokens. However, we need multiple communication channels among Security Token Services when multiple applications in different domains try to reach other Web Services. In this article we have proposed a Master Security Token Service (MSTS) that can act as a broker for all security authorization without duplicating the effort at every domain. In a world of heterogeneous systems where ... (more)

Enterprise Cloud Services Architecture

Enterprise services are built on applications that are running within the enterprises to fulfill the business demands. In the recent past, the concept of services in a cloud environment gained significance with services being hosted in a common cloud environment within the enterprise or outside the enterprise. In this article, I described the various steps involved in moving services from an enterprise level to cloud-based environment as part of a cloud implementation. Traditionally an organization's Enterprise Services Architectures are considered in terms of Business Architect... (more)

Performance Improvement in a J2EE Application

Java is hot. Just nine years old, it has become one of the leading development environments in the world. Millions of programmers and thousands of companies use it, and half of all IT managers expect to deploy J2EE applications this year. But Java's popularity hasn't necessarily made it easy for the growing population of Java code jockeys. Ever-shortening production cycles have kept the heat on programmers, who increasingly work in large teams to meet production milestones. And every day those teams come face-to-face with an immutable law of software development: the more code y... (more)

Developing a CICS-Based Web Service

Web services have opened opportunities to integrate the applications at an enterprise level irrespective of the technology they have been implemented in. IBM's CICS transaction server for z/OS v3.1 can support web services. It can help expose existing applications as web services or develop new functionality to invoke web services. One of the commonly used protocols for CICS web services is SOAP for CICS. It enables the communication of applications through XML. It supports as a service provider and service consumer independent of platform and language. SOAP for CICS enables CIC... (more)