Migrating, coexisting, and interoperating

Learn the concepts and processes behind migrating various aspects of your existing product configuration to WebSphere® Application Server V9.0. These aspects include migrating servers and applications to use the new features and technologies provided by this version of WebSphere Application Server, such as Java™ EE 7.

Migrating your application servers

The goal of migrating your application servers to WebSphere Application Server V9.0 is for the migrated servers to behave as closely as possible to how they behaved in the previous release. After you migrate the servers, you can further configure them to use new features provided in V9.0.

Applications that are installed in the old environment are redeployed to the new application server without any changes. To use new technologies that are available in V9.0, you must update your applications. For information about migration toolkits that can help you migrate your applications, see the Migrating your applications section.

The application servers are defined and configured within a profile. The WebSphere Application Server product provides a set of tools that you can use to migrate profiles. These tools also provide support for various migration strategies, including:
  • Local or remote: Migrating within the same host or machine, or migrating to new ones
  • Standard or clone: Disable the old profile after migration, or keep the new profile running

Regardless of the type of migration, you can use the command-line or GUI tools to migrate your product configuration as dependent on your operating system.

Migrating your applications

最佳实践 最佳实践: Rather than manually gathering information and migrating your applications, scan your applications by using the Migration Toolkit for Application Binaries and the WebSphere Application Server Migration Toolkit.
  1. Analyze your applications for migration issues by using the command-line Migration Toolkit for Application Binaries.

    The application binary scanner provides a detailed migration analysis report for your application, so you can better understand the type and scope of changes that the application might require. The report also includes detailed help to assist with the analysis of the potential migration issues.

    Because the tool installs quickly and does not require Eclipse or the application source code, you can easily integrate the tool into your application migration planning.

  2. Migrate your applications with help from the WebSphere Application Server Migration Toolkit.
    The Eclipse-based migration toolkit assists your application migration in the following ways:
    • Identifies deprecations, removals, and behavior changes that affect the application
    • Provides quick fixes to automatically make updates when possible
    • Provides detailed help for each migration issue
In addition to assisting in migrations from previous versions of WebSphere Application Server, the application migration tools can also help you migrate your applications to WebSphere Application Server Liberty or cloud environments such as IBM Bluemix.bprac

For more information and to download the toolkit, see the Migration Toolkit on WASdev.

Coexisting product installations

Coexisting is running multiple installations of WebSphere Application Server on the same machine at the same time. The installations can be the same version or different versions.

Interoperating product installations

Interoperating is exchanging data between two different product installations on the same machine or different machines that are at the same or different version. For example, an application can invoke a process that is supported by another application on a different machine. Another example is a V9.0 deployment manager managing a Version 8.5 federated node.


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