Coexistence support

Coexistence is a state in which multiple installations and multiple nodes from different versions of WebSphere® Application Server run independently in the same environment at the same time.

As it applies to WebSphere Application Server products, coexistence primarily refers to the ability of multiple installations of WebSphere Application Server to run independently on the same machine at the same time. Multiple installations include multiple versions and multiple instances of one version. Coexistence also implies various combinations of Web server interaction.

WebSphere Application Server Version 7.0 products can coexist with the following supported versions:
  • WebSphere Application Server Version 5.1.x
  • WebSphere Application Server, Network Deployment Version 5.1.x
  • WebSphere Application Server Version 6.x
  • WebSphere Application Server WebSphere Application Server, Network Deployment Version 6.x

All combinations of Version 5.1.x products, Version 6.x products, and Version 7.0 products can coexist so long as there are no port conflicts.

Table 1. WebSphere Application Server Version 5.1.x, Version 6.x, and Version 7.0 clients multiversion coexistence scenarios.

WebSphere Application Server Version 5.1.x and Version 6.x clients can coexist with Version 7.0 clients.

Installed product WebSphere Application Server Version 7.0 clients
WebSphere Application Server Version 5.1.x Supported
WebSphere Application Server, Network Deployment Version 5.1.x Supported
WebSphere Application Server Version 6.x Supported
WebSphere Application Server WebSphere Application Server, Network Deployment Version 6.x Supported
Table 2. WebSphere Application Server Version 5.1.x, Version 6.x, and Version 7.0 multiversion coexistence support.

WebSphere Application Server Version 5.1.x and Version 6.x products can coexist with Version 7.0 products.

Installed product WebSphere Application Server Version 5.1.x WebSphere Application Server Version 6.x WebSphere Application ServerVersion 7.0
Application Server WebSphere Application Server, Network Deployment WebSphere Application Server, Express Application Server WebSphere Application Server, Network Deployment WebSphere Application Server, Express Application Server WebSphere Application Server, Network Deployment WebSphere Application Server, Express
WebSphere Application ServerVersion 5.1.x Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application Server, Network Deployment Version 5.1.x Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application ServerIntegration Server Version 5.1.x Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application Server clients Version 5.1.x Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application Server Version 6.x Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application Server WebSphere Application Server, Network Deployment Version 6.x Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application Serverclients Version 6.x Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application Server Version 7 Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application Server, Network Deployment Version 7.0 Supported Supported Supported Supported Supported Supported Supported Supported Supported
WebSphere Application ServerVersion 7.0 Supported Supported Supported Supported Supported Supported Supported Supported Supported
In addition to multiversion coexistence, WebSphere Application Server also lets you install multiple times on one machine (multiple installation instances) or install once and have multiple profiles. Multiple Version 7.0 installation instances on one machine include the following combinations:
  • Multiple application server profiles from multiple installations of the WebSphere Application Server product
  • Multiple application server profiles from a single installation of the WebSphere Application Server product



Related information
Running multiple application server versions
Concept topic    

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Last updated: Oct 21, 2010 12:44:13 PM CDT
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