What are some common challenges mainframe performance capacity professionals face when optimizing system resources?

Mainframe Performance Capacity professionals often encounter challenges such as balancing resource allocation to meet varying workload demands, identifying and resolving bottlenecks, and ensuring system scalability as business needs evolve. They must also stay ahead of hardware and software upgrades while maintaining system availability. Collaboration with application teams and infrastructure groups is essential to address performance issues and proactively plan for future capacity requirements.