* Oracle Performance Analysis: Start this section with a one- or two-sentence summary of the Oracle performance analysis. Then focusing on Oracle, not the application or the operating system, perform a detailed Oracle response-time analysis (you'll learn more about how to do this later in this chapter and in Chapter 5). This section is very detailed and includes actual script output and screen shots.

* Application Performance Analysis: Start this section with a one- or two-sentence summary of the application performance analysis. Then focus on the application, not Oracle or the operating system. Based on your Oracle performance analysis, identify the most resource-consuming SQL, programs, processes, users, and applications. I also look at application-specific features. For example, with the Oracle E-Business Suite, the batch manager (called the Concurrent Manager) can have a dramatic performance impact. For a comprehensive analysis, the Concurrent Manager must be addressed. As with the Oracle Performance Analysis section, the contents are typically very detailed and include actual script output and screen shots.

* Operating System Performance Analysis: Start this section with a one- or two-sentence summary of the operating system performance analysis. This section contains details about only the operating system bottleneck. Unless these areas are specifically specified to be out of scope, make sure to investigate the CPU, memory, IO, and network subsystems. I usually include many screen shots and raw command output in this section. The more raw, relevant, and accurate the output, the more trust you will receive from the operating system team.