Simulate 2000

The architecture of Simulate 2000 is centered around three main components: the Simulation Engine, Configuration Files, and the ISPF Interface. The Simulation Engine is the core component responsible for intercepting and modifying the system clock calls made by the target applications or jobs. It uses z/OS system services to alter the date and time seen by the specified processes.

The Configuration Files are crucial for defining which applications, jobs, or subsystems will be affected by the simulation. These files contain specifications such as job names, program names, or subsystem IDs. The ISPF Interface provides a user-friendly environment for managing these configuration files, allowing administrators to easily create, edit, and maintain the settings.

Communication between these components is primarily internal to the z/OS environment. The Simulation Engine interacts directly with the z/OS system services to modify the date and time. The ISPF Interface provides a front-end for managing the Configuration Files, which are then used by the Simulation Engine.

Simulate 2000 does not use any external databases or storage mechanisms beyond the z/OS system datasets for storing configuration files. There are no specific network requirements for Simulate 2000, as it operates entirely within the z/OS environment. The tool integrates with the z/OS security infrastructure for access control.

The z/OS system logs all commands and actions performed by users, providing a comprehensive audit trail. The tool is deployed as a set of load libraries and configuration files on a z/OS system. Updates and patches are applied through standard z/OS software installation procedures.

The tool specializes in time-based testing, providing precise control over the system clock, which is crucial for applications that rely on date and time.