If you have a previous version of Tivoli Directory Server, upgrading is necessary if you want to use Tivoli Directory Server 6.3 with your existing schema definitions and directory server configuration. Tivoli® Directory Server 6.3 do not support migration from Tivoli Directory Server versions earlier than 6.0, and if detected will not provide with the Server or Proxy Server option for installation, but will allow installation of other components such as Embedded WebSphere® Application Server, C Client, Java Client, or Web Administration Tool, if selected. If your existing version is Tivoli Directory Server 6.0, 6.1, or 6.2, you can keep your existing version and also install Tivoli Directory Server 6.3. You can then upgrade any existing 6.0, 6.1, or 6.2 directory server instance to 6.3 version after installation of Tivoli Directory Server 6.3. You can also create new 6.3 directory server instances on the same system. You can continue to run your existing 6.0, 6.1, or 6.2 directory server instances and also run 6.3 directory server instances.
If you have a server from a supported version of Tivoli Directory Server that is earlier than 6.0, you must first upgrade to version 6.0, 6.1, or 6.2 before you can upgrade to the 6.3 version. Clients from earlier supported versions can coexist with Tivoli Directory Server version 6.3 clients and directory server instances.
In addition, it might be necessary to upgrade your operating system and your DB2® version. See IBM® Tivoli Directory Server Version 6.3 System Requirements for information about supported operating system and DB2 versions.
If you want to upgrade from an earlier version of Tivoli Directory Server, see Upgrading from previous releases for instructions.
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