2026-03-12 20:23:15

tpt/ash/shortmon_numblocks.sql

@@ -0,0 +1,48 @@
+-- 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.
+
+COL wait_class FOR a15
+COL event FOR a35
+COL time_range  HEAD "WAIT_TIM_BUCKET_US+" FOR A26 JUST RIGHT
+COL avg_wait_us HEAD "AVG_WAIT_IN_BKT_US" FOR 9,999,999,999
+COL pct_event FOR a9
+COL pct_total FOR a9
+
+BREAK ON event SKIP 1 DUPLICATES
+
+-- TODO: ignore latest sample (0 waits)
+
+SELECT /* (hint disabled) LEADING(@"SEL$4" "S"@"SEL$4" "A"@"SEL$4") USE_HASH(@"SEL$4" "A"@"SEL$4") */
+    session_state state
+  , wait_class
+  , event
+  , p3 num_blocks
+  , ROUND(AVG(time_waited)) avg_wait_us
+  , LPAD(REPLACE(TO_CHAR(POWER(2,TRUNC(LOG(2,CASE WHEN time_waited < 1 THEN NULL ELSE time_waited END))),'9,999,999,999')||' ..'||TO_CHAR(POWER(2,TRUNC(LOG(2,CASE WHEN time_waited < 1 THEN NULL ELSE time_waited END)))*2, '9,999,999,999'), ' ',''), 26) time_range
+  , COUNT(*) samples
+  , LPAD(TO_CHAR(TO_NUMBER(ROUND(RATIO_TO_REPORT(COUNT(*)) OVER (PARTITION BY session_state, wait_class, event) * 100, 1), 999.9))||' %',8) pct_event
+  , '|'||RPAD( NVL( LPAD('#', ROUND(RATIO_TO_REPORT(COUNT(*)) OVER (PARTITION BY session_state, wait_class, event) * 10), '#'), ' '), 10,' ')||'|' pct_event_vis
+  , LPAD(TO_CHAR(TO_NUMBER(ROUND(RATIO_TO_REPORT(COUNT(*)) OVER () * 100, 1), 999.9))||' %',8) pct_total 
+  , '|'||RPAD( NVL( LPAD('#', ROUND(RATIO_TO_REPORT(COUNT(*)) OVER () * 10), '#'), ' '), 10,' ')||'|' pct_total_vis
+FROM
+    v$active_session_history
+WHERE
+    1=1
+AND sample_time BETWEEN sysdate-1/24 AND sysdate
+--AND sample_time BETWEEN TIMESTAMP'2012-04-29 19:30:00' AND TIMESTAMP'2012-04-29 19:30:59'
+AND (REGEXP_LIKE(wait_class, '&1') OR REGEXP_LIKE(event, '&1'))
+GROUP BY
+    session_state
+  , wait_class
+  , event
+  , p3
+  , POWER(2,TRUNC(LOG(2,CASE WHEN time_waited < 1 THEN NULL ELSE time_waited END)))
+ORDER BY
+    session_state
+  , wait_class
+  , event
+  , p3
+  , time_range NULLS FIRST
+  , samples DESC
+/
+