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.
This topic is about configuration migration, such as migrating deployment managers and federated nodes in a network deployment environment. The Application Migration Toolkit for WebSphere Application Server provides support for migrating applications from previous versions of WebSphere Application Server to the latest product version. For information about migrating applications, read more about the Application Migration Toolkit.
sptcfgAs it applies to WebSphere Application Server for z/OS® products, coexistence primarily refers to the ability of multiple customizations (nodes) of WebSphere Application Server to run on the same z/OS image or sysplex at the same time. You can install WebSphere Application Server for z/OS once and customize it many times; that is, you can create many nodes from one installation. This installation can be shared by all LPARs (logical partitions) in the same sysplex.
Coexistence Type | Comments |
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General | Multiple WebSphere Application Server for z/OS cells
can coexist in the same sysplex. Multiple WebSphere Application Serverfor z/OS nodes can coexist on the same LPAR. WebSphere Application Server for z/OS Version 6.x and 7.x can coexist in the same cell with Version 8.0 nodes. No two cells can have the same cell short name. Separate cells need separate configuration file system mount points and Job Control Language (JCL) procedures. You need to determine port conflicts that might occur when earlier versions coexist with Version 8.0. Read the "Default port assignments" article in the information center for default port information. |
WebSphere Application Server for z/OS Version 6.x, 7.x, and Version 8.0 | Nodes can coexist on the same LPAR in the same cell or in different cells. |
Installed product | WebSphere Application Server Version 8.0 clients |
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WebSphere Application Server Version 6.x | Supported |
WebSphere Application Server WebSphere Application Server, Network Deployment Version 6.x | Supported |
WebSphere Application Server Version 7.0 | Supported |
WebSphere Application Server WebSphere Application Server, Network Deployment Version 7.0 | Supported |
Installed product | WebSphere Application Server Version 6.x, 7.0 | WebSphere Application Server Version 8.0 | ||||
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Application Server | WebSphere Application Server, Network Deployment | WebSphere Application Server, Express | Application Server | WebSphere Application Server, Network Deployment | WebSphere Application Server, Express | |
WebSphere Application Server Version 6.x | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server, Network Deployment Version 6.x | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 7.0 | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server, Network Deployment Version 7.0 | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server Version 8 | Supported | Supported | Supported | Supported | Supported | Supported |
WebSphere Application Server, Network Deployment Version 8.0 | Supported | Supported | Supported | Supported | Supported | Supported |