WebSphere Application Server Network Deployment, Version 6.1
             Operating Systems: AIX, HP-UX, i5/OS, Linux, Solaris, Windows, z/OS

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Interoperating with schedulers

Schedulers support forward compatibility. Tasks created in previous versions of WebSphere Application Server Enterprise Edition 5.0 or WebSphere Business Integration Server Foundation 5.1 continue to run in WebSphere Application Server, Version 6.x schedulers. Tasks that you create using Version 6.x are not compatible with product schedulers from Version 5.x. Version 5.x schedulers do not run any Version 6.x tasks.

Schedulers and versions

All schedulers that are configured to use the same database and tables are considered a clustered scheduler. To guarantee that your tasks run correctly, all servers in a scheduler cluster must be at the same version. If the servers are at different versions, tasks created with a Version 6.x scheduler might not run. If a mixed-Version environment is required for a short period of time, then all scheduler poll daemons should be stopped on all Version 5.x servers to allow a Version 6.x server to run all tasks. This action allows the Version 6.x schedulers to obtain leases and run tasks that have been created with a Version 6.x scheduler.

Running tasks created with schedulers prior to Version 5.0.2 is not supported. See the topic, "Interoperating with the Scheduler service," in the WebSphere Application Server Enterprise Edition Version 5.0.2 information center for details on how to migrate these tasks to a more recent version. See the Information Center Library to access the Version 5.0.2 information center.




Related tasks
Configuring schedulers
Related reference
Reference topic    

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Last updated: Feb 25, 2009 9:32:38 AM CST
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