For automatic problem diagnosis, a data collector module collects log data comprising code sets from a plurality of components in a data processing system. An analysis module translates the log data into at least one predefined symptom. Each symptom is associated with at least one code set of the log data. The analysis module selects from a knowledge base at least one problem that includes each symptom. The analysis module further calculates an influence factor for each problem, and ranks each problem from most likely to least likely based on the influence factor of the problem.