Considerations

The ULTRAOPT subsystem is installed in a single load library for use by two or more different systems. When you use multiple systems, there are a few considerations for the following files. These files are customized and unique for each system.

• File definition table (FDT) module (contains references to VSAM files)
• VSAM options file
• VSAM print file
• Product authorization security module

Although the temporary trial password will work for multiple systems during the trial period, you will need a permanent password for each ULTRAOPT product on each CPU when the trial period expires. For more information, see Displaying-processor-information.

Review the following considerations before deciding whether to use separate VSAM files or to use shared VSAM files:

• When the VSAM files are shared, changes that are made on one system are reflected on the other system. Changes include events such as updating include/exclude tables and turning optimization on or off.
• When two systems write to the same VSAM file, you must consider file integrity. What happens if changes at same time from different systems?
• When the VSAM files are separate and you update one VSAM file in one system, VSAM files in other systems are not updated.