2026-03-12 20:23:15

tpt/ash/examples/ash10.sql

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+-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
+-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
+
+SET LINES 999 PAGES 5000 TRIMSPOOL ON TRIMOUT ON VERIFY OFF
+
+COL sql_plan_step FOR A50 WORD_WRAP
+
+SELECT * FROM (
+  SELECT 
+        a.session_state
+      , a.event
+      , a.sql_id
+      , a.blocking_session_status
+      , a.blocking_session
+      , a.blocking_session_serial#
+      , a.current_obj#
+      , a.sql_plan_line_id
+      , a.sql_plan_operation ||' '||a.sql_plan_options sql_plan_step
+      , count(*)
+      , lpad(round(ratio_to_report(count(*)) over () * 100)||'%',10,' ') percent
+      , MIN(a.sample_time)
+      , MAX(a.sample_time)
+    FROM
+        DBA_HIST_ACTIVE_SESS_HISTORY a
+    WHERE
+        a.sample_time BETWEEN TIMESTAMP'2011-01-20 17:25:00' AND TIMESTAMP'2011-01-20 18:55:00'
+    AND a.event = 'enq: TX - index contention'
+    GROUP BY
+        a.session_state
+      , a.event
+      , a.sql_id
+      , a.blocking_session_status
+      , a.blocking_session
+      , a.blocking_session_serial#
+      , a.current_obj#
+      , a.sql_plan_line_id
+      , a.sql_plan_operation ||' '||a.sql_plan_options
+    ORDER BY
+        percent DESC
+)
+WHERE ROWNUM <= 30
+/
+