WebJul 5, 2016 · If you want a historical view, the DBA_HIST_ACTIVE_SESS_HISTORY might be your friend: SELECT DISTINCT MACHINE, UTL_INADDR.GET_HOST_ADDRESS(MACHINE) AS IP_ADDR FROM DBA_HIST_ACTIVE_SESS_HISTORY DHASH WHERE DHASH.SQL_ID = … WebJan 9, 2015 · We all know that time is important and every DBA goal should be to reduce to a minimum end-user response time and resources used by each request. With this post I’ll try to give explanation for database time, elapsed time and active session history. Someone might find this information useful to understand the basis for performance …

如何通过dba_hist_active_sess_history分析数据库历史性能问题

Webdba_hist_active_sess_history的Session采样情况，来定位问题发生的准确时间范围，并且可以观察每个采样点的top event和top holder。下面通过一个例 sample_time的注释来观察某个时间段的情况。注意最后一列session_count指的是该采样点上的等待该event的session数 … WebMar 4, 2011 · As Vincent pointed out the only way would be (afaik) to trace the session at the client level. In addition to the open cursors (which is how Toad does it), another, less precise, way would be to use ASH (Active Session History). The problems with ASH are that . it samples every seconds for active sessions (so you are missing all the quick ones), essity tax strategy

10 Useful queries Active Session History(Oracle ASH)

http://dba-oracle.com/t_dba_hist_active_session_history.htm WebAfter running the setup.sql script, open four SQL*Plus sessions, connected as ARUP. In three of these sessions, execute the test1.sql, test2.sql, and upd1.sql scripts, … WebDBA_HIST_ACTIVE_SESS_HISTORY has a BLOCKING_SESSION column that will tell you what the session was waiting on at that time. In the case of a session waiting on enq: TX - row lock contention, the blocking session should be the session that was holding the lock (i.e., the session in the middle of the "uncommitted transaction" you were looking for). fireball night sky