WebSep 4, 2024 · 過去のパフォーマンス情報を確認する方法としては、Automatic Workload Repository（AWR）とActive Session History（ASH）があります。これらは自動でパフォーマンス情報を取得しています。 WebNov 27, 2015 · Peak processes and sessions are available in the Active Workload Repository (AWR) in DBA_HIST_SYSMETRIC_SUMMARY.--Maximum number of sessions. select instance_number, maxval, begin_time from dba_hist_sysmetric_summary where metric_name = 'Session Count' order by maxval desc, begin_time desc; --Maximum …

SQL_ID found in dba_hist_sqltext but not in v$sql

WebMay 10, 2012 · Finding query with high temp space usage using ASH views. We are having challenges with queries that spend most of their time on these waits: This wait indicates that a query on one instance of a RAC system is causing its instance to add temp space to its sort segment and remove space from another instance’s sort segment. For … WebApr 4, 2024 · Under Wait Events I can see that "log file sync" is the top in both snapshots, but went from 13%->35% DB time, 5.5ms->29.44ms avg wait and total wait increased … town park village bloomsburg pa

How to find out past pending transactions - Stack Overflow

WebMar 9, 2016 · Oracle keeps session history in the circular memory buffer in the SGA. This means that the greater the database activity is, the smaller the amount of time session … WebJan 23, 2024 · Performance Tuning Basics 14 : Active Sessions History (ASH) Basics. The active session history (ASH) sampler performs the sampling. ASH samples the current state of all active sessions. The database collects this data into memory, where you can access it with a V$ view. Using ASH enables you to examine and perform detailed … WebQuery not showing in dba_hist_active_sess_history. The application team claims there was a statement that took about 30s to execute at about a certain time. I tried to find out what queries had been executed in during this time with the following statement: select a.sql_id, sample_time from dba_hist_active_sess_history a, dba_hist_sqltext b ... town parking deaconess