By Ричард Нимек
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Extra info for Oracle Database 10g Performance Tuning Tips & Techniques
Example text
Gathering Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . Running the Statistics Report . . . . . . . . . . . . . . . . . . . . . . . The Automatic Workload Repository (AWR) and the AWR Report . . . . . . . . . . . . Manually Managing the AWR . . . . . . . . . . . . . . . . . . . . . . AWR Automated Snapshots . . . . . . . . . . . . . . . . . . .
Case 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Buffer Cache/Data Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . Buffer Statuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . Segments Occupying Block Buffers . . . . . . . . . . . . . . . . . . . . Hot Data Blocks/Latch Contention and Wait Events . . . . . . . . . . . . . . Instance/Database .
Oracle provides a number of new views that provide information about server alerts, as shown in Table 1-3. View Description DBA_THRESHOLDS Lists the threshold settings defined for the instance DBA_OUTSTANDING_ALERTS Lists the triggered alerts in the database that have not been cleared DBA_ALERT_HISTORY Lists a history of alerts that have been cleared V$ALERT_TYPES Provides information such as group and type for each alert V$METRICNAME Contains the names, identifiers, and other information about the system metrics V$METRIC Contains metric threshold settings and current values (there is also a V$SYSMETRIC) V$METRIC_HISTORY Contains historical metric threshold settings TABLE 1-3.