Oracle 视图 V$SYSMETRIC_HISTORY 官方解释，作用，如何使用详细说明
本站中文解释
V$SYSMETRIC_HISTORY是Oracle数据库中所有数据库指标的历史数据视图，可以查看某个时间段内某个指标的数据进行分析。它可以安装以下筛选条件来检索相应的数据：
1、HOST : 要检索的主机名
2、METRIC_GROUP : 要查看的指标组
3、METRIC_NAME : 要查看的指标名
4、INTERVAL_MIN : 要查看的时间间隔
例如，可以使用如下查询来查看当前主机上收集到的最近30分钟内CPU利用率的历史数据：
SELECT * FROM V$SYSMETRIC_HISTORY
WHERE HOST = SYS_CONTEXT (‘USERENV’, ‘HOST’)
AND METRIC_GROUP = ‘CPU’
AND METRIC_NAME = ‘%Utilization’
AND INTERVAL_MIN = 30
ORDER BY TIMESTAMP ASC;
官方英文解释
V$SYSMETRIC_HISTORY displays all system metric values available in the database. Both long duration (60-second with 1 hour history) and short duration (15-second with one-interval only) metrics are displayed by this view.
| Column | Datatype | Description |
|---|---|---|
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Begin time of the interval |
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End time of the interval |
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Interval size (in hundredths of a second) |
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Metric group ID |
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Metric ID |
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Metric name |
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Metric value |
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Metric unit description |
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The ID of the container to which the data pertains. Possible values include:
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See Also:
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“DBA_HIST_SYSMETRIC_HISTORY”
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“V$CON_SYSMETRIC_HISTORY”
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“DBA_HIST_CON_SYSMETRIC_HIST”
