Pre-Installation and Maintenance Requirements

Before you begin to install the Interface, you should be aware of installation prerequisites and consider maintenance procedures that may affect the installation process. This section describes pre-installation and maintenance requirements.

These instructions assume that the person performing the installation and maintenance procedures has a working knowledge of MVS. If you are installing the Interface with the FOCUS Multi-Session Option (MSO), MSO knowledge is required. Knowledge of FOCUS and IMS DL/I calls is not required.

Note: To access IMS databases from CMS, you must install the FOCUS Cross-Machine Interface as described in the FOCUS for IBM Mainframe Cross-Machine Interface Users Manual.

Your IMS database administrator will have to provide site-specific information.

Read this appendix thoroughly before installing the Interface to ensure correct installation.

Software Requirements

Before you install the Interface, please review the following list of software requirements:

• IMS must be installed and fully operational. If it is not, contact your IMS database administrator.
• FOCUS must be installed and fully operational. If it is not, contact your FOCUS database administrator or consult the appropriate FOCUS installation guide for installation instructions.

You also need to know the FOCUS Release and maintenance level. There are two ways to identify your release:

• Check the label of the distribution tape used to install FOCUS; the numbers are printed on it.
• Invoke FOCUS if it is already installed. The release is displayed each time you begin a session. To display the maintenance level as well, issue the ? RELEASE query command.

Every copy of FOCUS has a release number and a maintenance level.

Maintenance

There are no maintenance procedures that you must perform regularly to ensure proper functioning of the Interface. However, the following three situations require maintenance:

• If you install a new release of FOCUS (including maintenance releases), you must also reinstall the Interface from the same release.
• If you receive a program temporary fix (PTF) that affects the Interface, it will be accompanied by a cover letter containing installation instructions. If you still have installation questions after reading the cover letter, contact Information Builders Customer Support Services (CSS) in New York at (800) 736-6130 or your local Information Builders representative.
• If you install a new version of IMS, you do not have to re-install the Interface. However, you must make sure that the DFSRESLB DD card references the IMS.RESLIB dataset for the new version of IMS. For DBCTL, you must reassemble and re-link the DFSPZP module, as described in Assemble and Link the DRA Startup Table in Create the DRA Startup Table: DFSPZPxx.