Design variables

The performance of an IMS system depends on the interaction of the workload with many design variables.

Performance is affected by:

• IMS system definition
• IMS execution-time options and parameters
• Application design
• Database design
• Operating system configuration
• Hardware configuration

These areas are addressed in Initializing z/OS and IMS parameters for tuning. Design aspects also include allowing for design and tuning changes decided upon as a result of monitoring the system in operation.