Roadmap: Migrating and coexisting application servers
Migrating involves collecting the configuration information from a previous release of a WebSphere® Application Server and merging it into a configuration for a new release. Coexisting involves running a new release of a WebSphere Application Server and an earlier release simultaneously on the same machine.
Before you begin

Este artigo trata da migração da configuração de perfil. Para migrar seus aplicativos para a versão mais recente, use o Kit de Ferramentas de Migração do WebSphere Application Server. Para obter mais informações, consulte o Kit de ferramentas de migração no WASdev.
sptcfgRead Overview of migration, coexistence, and interoperability and Migration considerations. For resources to help you plan and perform your migration, visit Knowledge Collection: Migration planning for WebSphere Application Server.
The migration tools basically save the existing WebSphere configurations and user applications in a backup directory and then process the contents of this backup directory to migrate the configurations and your applications from previous WebSphere Application Server releases to the latest release.
If you have a previous version of WebSphere Application Server, you must decide whether to migrate the configuration and applications of the previous version to the new version.
If you run two different versions of the application server at the same time, the two versions are coexisting. For example, if Version 7.0 and 8.5 application servers are running on the same machine, they are coexisting.
For help in troubleshooting problems when migrating, read Troubleshooting migration.
About this task
For information on migrating to Versão 9.0, read Migrating product configurations. For more information on coexistence among releases, read Running coexisting application servers.