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 6.1 products can coexist with the following supported versions:
All combinations of V5.x products, V6.0.x products, and V6.1 products can coexist so long as there are no port conflicts.
WebSphere Application Server V5.x and V6.0.x clients can coexist with V6.1 clients.
Installed product | WebSphere Application Server V6.1 clients |
---|---|
WebSphere Application Server Version 5.0 | Supported |
WebSphere Application Server Network Deployment V5.0 | Supported |
WebSphere Application Server Version 5.0.1 | Supported |
WebSphere Application Server Network Deployment V5.0.1 | Supported |
WebSphere Application Server Version 5.0.2 | Supported |
WebSphere Application Server Network Deployment V5.0.2 | Supported |
WebSphere Application Server Version 5.1 | Supported |
WebSphere Application Server Network Deployment V5.1 | Supported |
WebSphere Application Server Version 6.0 | Supported |
WebSphere Application Server Network Deployment V6.0 | Supported |
WebSphere Application Server Version 6.0.1 | Supported |
WebSphere Application Server Network Deployment V6.0.1 | Supported |
WebSphere Application Server Version 6.0.2 | Supported |
WebSphere Application Server Network Deployment V6.0.2 | Supported |
WebSphere Application Server Version 5.x and V6.0.x products can coexist with V6.1 products.
Installed product | WebSphere Application Server V5.x | WebSphere Application Server V6.0 | WebSphere Application Server V6.1 | |||||
---|---|---|---|---|---|---|---|---|
Application Server | Network Deployment | Application Server | Network Deployment | Express | Application Server | Network Deployment | Express | |
WebSphere Application Server Version 5.0 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V5.0 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V5.0 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 5.0.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V5.0.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V5.0.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 5.0.2 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V5.0.2 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V5.0.2 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 5.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V5.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V5.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 6.0 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V6.0 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V6.0 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 6.0.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V6.0.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V6.0.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 6.0.2 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V6.0.2 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V6.0.2 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 6.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Network Deployment V6.1 | Supported | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server clients V6.1 | 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 V6.1 installation instances on one machine include the following combinations:
Restrictions on using mixed-release cells:
Note that in this mixed-release environment, there might be some restrictions on what you can do with servers at the older release level. For details, see Creating application servers. There might also be restrictions on creating clusters and cluster members. For details, see Creating clusters.