Adding additional tiers to an installation

You can add a software tier to a computer that already hosts one or more tiers, by running the installation program.

Before you begin

  • Ensure that you use the same version of the installation program to install additional tiers or product modules. For example, if you install version 11.5, and then 11.5.1 is released, do not try to install additional tiers or product modules with the 11.5.1 image. If you want to install a later version of the tiers or product modules, then migrate your existing version. You can, however, add tiers or product modules to a version of the product that has had fixes and service packs applied. However, in that case you might need to reapply the updates afterward.
    • Choose your installation topology, review the installation checklists, and prepare the tier computers.
    • Obtain the product media to include the installation and entitlement packages.
    • Configure your browser correctly so that the installation program runs smoothly.
    • Microsoft Windows: Start an administrator session by using one of the following methods:
      • Run the following command:
        runas /user:Administrator cmd.exe
      • Open an elevated command window.
        1. Click Start > Search.
        2. In the Search Results box, enter cmd and press Ctrl+Shift+Enter.
        3. Click Continue to accept the prompt asking for your permission to continue.
    • AIX Linux: Log in as the root user.

  • Ensure that you have a current backup of your InfoSphere® Information Server installation.

  • If the WebSphere® Application Server processes or node agents are currently running under a non-root user, there is no longer a need to change them to run as root before running the installation or uninstallation program. However, after running the program, the application server will have been switched to run as root. Therefore, if you want to run it as non-root again, you will need to switch it to run as the non-root user afterward.

About this task

To add an additional software tier to a computer that already hosts one or more tiers, run the installation program on the target computer.

You only need to run the installation program one time on each computer even if you are adding more than one tier. The installation program installs the tiers in the correct order on the computer.

The client tier has no dependencies and can be installed by itself on a computer. However, if you decide to install any of the other tiers on the same computer where a client has already been installed, the existing client must first be uninstalled and installed again along with the additional tiers.

For client tier installations, if you want to include multiple versions of the clients on the same computer, install the earlier version clients on the computer before you install the most recent version of the client tier. Install the clients in order from earliest version to latest version.

Procedure

  1. Run the installation program on the computer.
    • Follow the prompts. When the installation program detects the existing installation and prompts you to choose whether to add additional products or tiers, select Add Tiers.

      If you are installing a client tier on a computer where an engine tier is installed, the client tier and engine tier must share the same base directory (for example, C:\IBM\InformationServer).

      Keep the following dependencies in mind when adding additional tiers to an installation:
      Table 1. Tier dependencies
      Tier Dependency
      Repository tier None
      Services tier Repository tier
      Engine tier Services tier
      Client tier None
    • Continue to follow the prompts to select the products to install and to complete the installation.
  2. Run the IBM® Support Assistant Lite for InfoSphere Information Server tool to verify the installation. Refer to the Running the ISALite tool to verify the installation and troubleshoot topic for more information.

What to do next

Configure the newly installed product modules.

If you disabled scheduled tasks or deployed applications before running the installation program, restart the tasks and re-enable the applications.