Rolling upgrade

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This topic only applies to BAW, and is located in the BAW repository. Last updated on 2025-01-20 10:38
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.

Before you begin

Before you perform a rolling upgrade, you need to upgrade workflow servers and then Workflow Center and tools. A development environment, a staging environment, and an offline production server, is required to complete the rolling upgrade.
Note: You can perform the rolling upgrade only when fix packs, refresh packs, or interim fixes are applied. It cannot be used for migration between major releases.

Procedure

Complete the following steps:

  1. Upgrade your staging server environment. Test your applications in the new environment and make sure that they work as expected.
  2. Upgrade your development server environment. Test your applications in the new environment and make sure that they work as expected.
  3. Upgrade your production server environment.
  4. 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 new function capability cannot be introduced before the entire topology is upgraded. After you upgrade the Workflow Center, reconnect any servers that are online. Make sure that everything works as expected.