IMS Database Reorganization Expert

The architecture of IMS Database Reorganization Expert (IMS DRE) and IMS Parallel Reorganization (IMS PR) comprises several key components designed for efficient IMS database reorganization on z/OS. The Control Program is the central component, managing the overall reorganization process, scheduling tasks, and coordinating the activities of other components. Utility Interfaces provide the means to interact with IMS utilities, such as the UNLOAD and LOAD utilities, to extract and load data.

The Monitoring and Logging component provides real-time status updates, performance metrics, and detailed error reporting, which are crucial for tracking the progress and health of the reorganization process. Communication between these components is primarily managed through internal control blocks and data sets. The products support various IMS database types.

Configuration is managed through JCL and control statements. For example, the UNLOAD command uses parameters to specify the input database and output file format. The LOAD command defines the target database and the source data.

The products support integration through JCL and control statements. The tools offer detailed logging and monitoring capabilities, including performance metrics and error reporting. Compared to manual reorganization, IMS DRE and IMS PR automate and accelerate the process, improving database availability and performance.

These tools integrate with existing IMS utilities and are essential for maintaining database health and efficiency. The products support various IMS database types.