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數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

這篇文章主要介紹了數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù),具有一定借鑒價(jià)值,感興趣的朋友可以參考下,希望大家閱讀完這篇文章之后大有收獲,下面讓小編帶著大家一起了解一下。

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DBA_HIST_ACTIVE_SESS_HISTORY

DBA_HIST_ACTIVE_SESS_HISTORY displays the history of the contents of the  in-memory active session history of recent system activity. This view contains  snapshots of V$ACTIVE_SESSION_HISTORY. See "V$ACTIVE_SESSION_HISTORY" for  further interpretation details for many of these columns (except SNAP_ID, DBID,  and INSTANCE_NUMBER).

數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

查看故障時(shí)間段等待事件、問(wèn)題sql id及會(huì)話訪問(wèn)次數(shù)

--alter session set nls_date_format='yyyy-mm-dd hh34:mi:ss'; select trunc(sample_time, 'mi') tm, sql_id, nvl(event,'CPU'),count(distinct session_id) cnt  from dba_hist_active_sess_history  where sample_time between to_date('2019-08-22 14:00:00') and  to_date('2019-08-22 14:30:00')  group by trunc(sample_time, 'mi'), sql_id,nvl(event,'CPU')  order by cnt desc;

數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

查看該sql相關(guān)的等待事件及對(duì)應(yīng)的會(huì)話訪問(wèn)次數(shù)

select sql_id, nvl(event, 'CPU'), count(distinct session_id) sz  from dba_hist_active_sess_history a, dba_hist_snapshot b  where sample_time between to_date('2019-08-22 14:00:00') and  to_date('2019-08-22 15:00:00')  and sql_id = '4ksvn2rgjnhcm'  and a.snap_id = b.snap_id  and a.instance_number = b.instance_number  group by sql_id, nvl(event, 'CPU')  order by sz desc;

數(shù)據(jù)庫(kù)中如何查看故障時(shí)間等待事件、問(wèn)題sql及會(huì)話訪問(wèn)次數(shù)

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