This topic applies only on the z/OS operating system.

Planning to migrate WebSphere Application Server for z/OS

You must prepare your system to migrate WebSphere Application Server for z/OS to Version 6.0.x.

Before you begin

WebSphere Application Server for z/OS supports the migration paths to Version 6.0.x from the following releases:
  • Version 5.0.x
  • Version 5.1
In addition to migration, it is possible for the versions of the WebSphere Application Server mentioned above to coexist with Version 6.0.x, with the restriction that Version 5.0.x cannot coexist with Version 6.0.x in the same cell on the same LPAR. If you have multiple Version 5.0.x nodes on the same LPAR, all nodes must be migrated to Version 6.0.x at the same time.

To learn more about the migration utilities, see Frequently asked questions about the migration process. When you are getting ready to migrate to Version 6.0.x, see Standalone application server node migrations, Network Deployment migrations, or Managed (federated) node migrations for detailed planning and migration information.

Important: Before you migrate from WebSphere Application Server Version 5.x to Version 6.x, the application servant region ID should be connected to a keyring and the keyring should have the WebSphereCA certificate associated with it. Otherwise, you will see security errors if you have global security turned on.

Procedure

  1. Install the Version 6.0.x product.
  2. Prepare your environment for migration. You should also plan for any new features that you might want to include.
  3. Review the "Ensuring problem avoidance" article in the information center, making sure that each task has been completed before you begin.
  4. Review Migrating and coexisting to determine if you want the two versions of the product to coexist in the same environment, or if you want to perform a complete migration.
  5. Capture the variables used in the current installation. This information will be useful in planning for the new installation, ensuring that you define unique ports, and in planning for the HFS structure.

What to do next

When you have finished planning and are ready to begin migrating, continue to Migrating product configurations.



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Last updated: Sep 20, 2010 11:08:29 PM CDT
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