You can create an environment in which multiple versions of WebSphere Application Server can run independently on the same system at the same time. A major consideration in coexistence is the avoidance of port conflicts.
Coexisting, as it applies to WebSphere Application
Server products, involves multiple installations of WebSphere Application
Server running independently on the same system at the same time. Multiple
installations include multiple versions and multiple installations of one
version. Coexistence also implies various combinations of Web server interaction.
Coexisting, as it applies to WebSphere Application
Server products, is running a new release of a WebSphere Application Server
product on the same machine at the same time as you run an earlier release
or running two installations of the same release of a WebSphere Application
Server product on the same machine at the same time.
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