Resolve PostgreSQL CPU Utilization Issue

Urgently seeking an expert to resolve a persistent issue with PostgreSQL - CPU Utilization consistently hitting 100%. We have already tried restarting the server and checking for any CPU-intensive queries, with no success. Impressive ability to analyze and optimize databases is a must-have for this task, alongside strong competency in system resource management. Expectation is to ensure smooth and efficient operation of our PostgreSQL. Immediate availability is a plus, as we need this fixed ASAP.