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This chapter describes the performance monitoring methods and explains the use of the monitoring information. The descriptions and output samples can help you decide which method to use for the following purposes:

The kind of data that you need to collect depends on the kind of applications that you run on your database server. The causes of performance problems on database servers used for online transaction processing applications (OLTP) might be different from the causes of problems on database servers that are used primarily for DSS applications.

Database servers that host operational data stores or other applications that combine DSS-like and OLTP-like applications present a performance-tuning challenge and require careful collection and analysis of performance data.

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