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Upgrading WebLogic Application Environments

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Upgrading a Domain at Administration Server Startup (Implicit Mode)

The implicit mode of upgrade enables you to upgrade a domain automatically at server startup. This mode should be used only in a development environment, and it is valid only for the machine on which the Administration Server resides. The implicit mode of upgrade is not recommended for use in a production environment.

Before proceeding, make sure that you have performed the prerequisite steps described in Prepare to Upgrade.

To start the WebLogic Upgrade Wizard in implicit mode:

  1. Verify that the WebLogic domain is not running.
  2. Open an MS-DOS command prompt window (on Windows) or a command shell (on UNIX) and set up the environment as described in Step 5: Set Up the Environment.
  3. Update the startup scripts in the domain to reference the WebLogic Server 9.0 installation.
  4. For example, make sure WL_HOME is set to the WebLogic Server 9.0 installation, as in the following example: c:\bea\weblogic90.

    By default, the WebLogic Upgrade Wizard prompts you for confirmation before starting the upgrade process. You can disable the prompt by specifying, in the startup script, the following command argument for starting the server: -Dweblogic.ForceImplicitUpgradeIfNeeded=true

  5. Start up the Administration Server in your domain.
  6. Respond to the upgrade confirmation prompt, if necessary.

    The WebLogic Upgrade Wizard checks whether the domain directory was generated using a valid version of WebLogic Server (6.1, 7.0, or 8.1), and, if the result is true, it automatically upgrades the domain. This process occurs only once: the first time you start the Administration Server.


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