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Beginning Oracle Database 11g Administration From Novice to Professional

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CHAPTER 14 DATABASE MAINTENANCE<br />

Time Series<br />

A time series is a sequence of measurements made at periodic intervals. The STATSPACK<br />

tables contain much time series data and can be used for capacity reviews. The STATSPACK<br />

tables , , and are of<br />

particular interest—they s<strong>to</strong>re snapshots of the dynamic performance views ,<br />

, , and respectively. As illustrated in Listing 14-8,<br />

offers cumulative values of various operating system metrics such as CPU usage<br />

and contains snapshots of this data—the snapshots are identified by the<br />

column.<br />

Listing 14-8. Comparison of Data in and

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