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.