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Installing Databridge Twin

Installation Requirements

Databridge components must be installed on both the primary and secondary systems.

You must install the current version of Databridge Host software on your primary system before you install Databridge Twin on the secondary system. Go to Install Databridge Host of this guide for Host installation instructions and system requirements.

Databridge Twin runs on all Unisys MCP-hosted mainframes. If you plan to use Databridge Twin and Databridge Host on separate mainframes:

  • We recommend that both mainframes use the same MCP level.

  • Both mainframes must be running the same DMSII level.

Install Databridge Twin to the Secondary System

Use this procedure to install Databridge Twin to the secondary system.


If you run Databridge Twin and Databridge Host software on the same mainframe, the usercode from which you run Databridge Twin must be different than the usercode where Databridge Host resides.

Use this procedure to install Databridge Twin. You can install the Databridge Twin on the same mainframe where you installed the Databridge server software, or you can install it to a different mainframe.

Before you install, you'll need to determine the usercode and pack that you'll use to install. For best results, we recommend that you choose a privileged usercode and the primary pack of the FAMILY substitution statement.

  1. Sign on to a privileged usercode on the secondary system.

    If you install to a nonprivileged usercode, all object files will be marked as restricted and you will have to use the ODT command RESTRICT -- FILE objectcode on every program.

  2. Upload Databridge container to the host.

    Upload the DBadministrative-00-BASE files using a file transfer tool capable of binary/image transfers to the privileged usercode where Databridge is to be installed. The DB70-00-BASE file replaces the IMAGE and DISKINSTALL files used in previous releases.

    The DISKINSTALL image is still available, and can be uploaded and utilized to get the install WFL.


    The install WFL can also be extracted from the DB70-00-BASE file, which makes this file redundant. The file DISKINSTALL will not be provided in the next release.

  3. Unwrap the Databridge installation WFL (WFL/DATABRIDGE/INSTALL).

    To extract the install WFL from the file DB70-00-BASE, enter the following CANDE command:


    Enter the following CANDE command:


  4. Start the Databridge Installation WFL.


    If you want to install Databridge Twin to a different pack family than primary pack of your FAMILY substitution statement (FAMILY DISK = primarypack OTHERWISE secondarypack) use the following command instead.


    The WFLs are copied with a SAMPLE node in the title. They will also be copied without the SAMPLE node using the ADD command so that first-time installations will have WFL files with the standard name but existing WFL files are not replaced.


    Modify WFL/DATABRIDGE/INCLUDE/SSRTITLES such that the locations and file titles of the various compilers and system software is correct for each SSR (System Software Release) Databridge Twin will use.

    When installation is complete, go to chapter 3 of the Databridge Twin Administrator's Guide, Configuring Databridge Twin to configure Twin.