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.