You can roll out maintenance incrementally in an IBM® Business
Automation Workflow installation that
consists of Workflow Center
and multiple workflow servers, allowing for the continued running of production applications during
the upgrade and regression test period.
About this task
To perform a rolling upgrade, upgrade the workflow servers and then Workflow Center and tools.Note: A
rolling upgrade can be performed only when applying fix packs, refresh packs, or interim fixes. It
cannot be used for migration between major releases.
Procedure
Assuming that you have a development environment, a staging environment, and an offline
production server, complete the following steps:
- Upgrade your staging server environment. Test your applications in the new environment
and make sure that they work as expected.
- Upgrade your development server environment. Test your applications in the new
environment and make sure that they work as expected.
- Upgrade your production server environment.
- Upgrade Workflow Center.
Note: A Workflow Center
environment must be upgraded only after server environment that is associated with
it.
The
Workflow Center maintains a full
version history of all the process applications, and there is no opportunity for new function
capability to be introduced before the entire topology has been upgraded. Once you have upgraded the
Workflow Center, reconnect
any servers that should be online. Make sure that everything works as expected.