2026-03-12 20:23:15

tpt/ash/sqlexec_duration_buckets.sql

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+-- Copyright 2018 Tanel Poder. All rights reserved. More info at https://tanelpoder.com
+-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
+
+
+COL approx_elapsed_time FOR A30
+
+BREAK ON ash_sql_id SKIP 1
+
+WITH ash AS (
+    SELECT
+        sql_id
+      , session_id
+      , sample_time
+      , sample_time - CAST(MIN(sql_exec_start) 
+          OVER(PARTITION BY session_id,session_serial#,sql_exec_start,sql_exec_id)
+          AS TIMESTAMP) elapsed_time
+      , sql_exec_start
+      , sql_exec_id
+      , COUNT(*) seconds
+    FROM
+        gv$active_session_history
+    WHERE
+        sql_id LIKE '&1'
+    AND &2
+    AND sample_time BETWEEN &3 AND &4
+    GROUP BY
+        sql_id
+      , session_id
+      , session_serial#
+      , sample_time
+      , sql_exec_start
+      , sql_exec_id
+),
+longrunning AS (
+SELECT * FROM ash
+WHERE
+    elapsed_time > INTERVAL '1' SECOND
+),
+individualexecutions AS (
+SELECT
+    sql_id
+  , sql_exec_start
+    -- an earlier analytic function already does the "partition by session_id,session_serial#"
+  , MAX(elapsed_time) approx_elapsed_time
+  , TRUNC((EXTRACT(DAY    FROM MAX(elapsed_time)) * 24 * 60 * 60) + 
+          (EXTRACT(HOUR   FROM MAX(elapsed_time)) * 60 * 60) +
+          (EXTRACT(MINUTE FROM MAX(elapsed_time)) * 60) +
+          (EXTRACT(SECOND FROM MAX(elapsed_time)))
+    ) as approx_elapsed_sec
+  , SUM(seconds) sqlexec_db_time
+  , COUNT(DISTINCT session_id) sessions
+FROM longrunning
+GROUP BY
+    sql_id
+  , sql_exec_start
+ORDER BY
+    sql_id
+  , sql_exec_start
+  , COUNT(*) DESC
+)
+SELECT
+    sql_id as ash_sql_id
+  , approx_elapsed_sec
+  , SUM(sqlexec_db_time) total_db_time
+  , MIN(sql_exec_start)  first_seen_start
+  , MAX(sql_exec_start)  last_seen_start
+FROM
+    individualexecutions
+GROUP BY
+    sql_id
+  , approx_elapsed_sec
+ORDER BY
+    sql_id
+  , approx_elapsed_sec
+/
+