PeopleSoft is a complex multi-functional, multi-tier application. Important questions about its configuration, load balancing and capacity planning need to be answered during its deployment and production use. This paper describes an approach to answering such questions for the most commercially important configurations of PeopleSoft (3-tier, 2-tier and mixed). It covers architectural features and available measurements relevant to performance analysis and capacity planning. Comprehensive treatment of all the information sources is necessary for the solution. 1. Performance analysis of an applicatio