本站中文解释
(ORACLE11G以上 )
Oracle视图DBA_HIST_BG_EVENT_SUMMARY用于查看背景进程运行事件的历史汇总数据,包括活动事件名称、活动事件ID、开始时间、结束时间、状态和同事件ID次数等等,可以用来分析系统在每一时刻背景进程的活动。
这个视图的使用方法就和使用其它的视图一样,通过select语句即可查看它的内容,如: select * from DBA_HIST_BG_EVENT_SUMMARY; 当然,你也可以根据自己的需求,使用这个视图提供的关键字如event_name,event_id,start_time,end_time,status,occurences等,并用其与其他视图关联,查看需要的相关信息。
官方英文解释
DBA_HIST_BG_EVENT_SUMMARY
displays the historical summary background event activity.
This view contains snapshots from V$SESSION_EVENT
.
Column | Datatype | NULL | Description |
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Unique snapshot ID |
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Database ID for the snapshot |
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Instance number for the snapshot |
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Identifier of the wait event |
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Name of the wait event |
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Identifier of the class of the wait event |
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Name of the class of the wait event |
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Total number of waits for the event |
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Total number of timeouts for the event |
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Total amount of time waited for the event (in microseconds) |
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The database ID of the PDB for the sampled session |
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The ID of the container that
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See Also:
“V$SESSION_EVENT”