2026-03-12 20:23:15

vg/ash_top_services_breakdown.sql

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+@@header
+
+/*
+*
+*  Author     : Vishal Gupta
+*  Purpose    : Display top activity from ASH
+*  Parameters : 1 - Number of MINUTES (Default 5min)
+*               2 - Top Row Count     (Default 5 rows)
+*               3 - INST_ID           (Default %)
+*               3 - TO_MINUTES (Default 0min)
+*
+*  Revision History:
+*  ===================
+*  Date       Author        Description
+*  ---------  ------------  -----------------------------------------
+*  02-Apr-13  Vishal Gupta  Created
+*
+*/
+
+
+/************************************
+*  INPUT PARAMETERS
+************************************/
+UNDEFINE FROM_MINUTES
+UNDEFINE TOPROWCOUNT
+UNDEFINE INST_ID
+UNDEFINE TO_MINUTES
+
+DEFINE FROM_MINUTES="&&1"
+DEFINE TOPROWCOUNT="&&2"
+DEFINE INST_ID='&&3'
+DEFINE TO_MINUTES="&&4"
+
+
+set term off
+COLUMN  _FROM_MINUTES    NEW_VALUE  FROM_MINUTES      NOPRINT
+COLUMN  _TO_MINUTES      NEW_VALUE  TO_MINUTES        NOPRINT
+COLUMN  _TOPROWCOUNT     NEW_VALUE  TOPROWCOUNT       NOPRINT
+COLUMN  _INST_ID         NEW_VALUE  INST_ID           NOPRINT
+
+SELECT DECODE('&&FROM_MINUTES','','5','&&FROM_MINUTES') "_FROM_MINUTES" 
+     , DECODE('&&TO_MINUTES','','0','&&TO_MINUTES')     "_TO_MINUTES" 
+     , DECODE('&&TOPROWCOUNT','','5','&&TOPROWCOUNT')   "_TOPROWCOUNT" 
+     , DECODE('&&INST_ID','','%','&&INST_ID')           "_INST_ID" 
+from dual;   
+
+set term on
+
+PROMPT *****************************************************************
+PROMPT * ASH - Top &&TOPROWCOUNT Active Services (Over Last &&FROM_MINUTES min)
+PROMPT * 
+PROMPT * Input Parameters 
+PROMPT *  - Minutes       = '&&FROM_MINUTES' 
+PROMPT *  - Top Row Count = '&&TOPROWCOUNT' 
+PROMPT *  - Instance ID   = '&&INST_ID' 
+PROMPT *  - To Minutes    = '&&TO_MINUTES' 
+PROMPT *****************************************************************
+
+
+COLUMN  service_name      HEADING "ServiceName"            FORMAT a30
+COLUMN  percent           HEADING "Activity| (%age)"       FORMAT 999.99
+COLUMN  session_count     HEADING "Active|Session|Count"   FORMAT 999,999
+
+WITH ash_session_summary AS
+(
+    select TRUNC(ash.sample_time,'MI') sample_time
+         , s.name service_name
+     , count(1) session_count 
+    from gv$active_session_history ash
+         JOIN dba_services s ON s.name_hash = ash.service_hash
+    where 1=1
+    AND s.name NOT IN ('SYS$BACKGROUND')
+    --and s.name = 'pr01pimi_sas_con' 
+    and ash.sample_time > sysdate - (1/24)
+    group by TRUNC(ash.sample_time,'MI'), s.name
+)
+, ash_rank AS
+(
+   SELECT service_name
+        , RANK() OVER (ORDER BY SUM(session_count) desc) rank
+     FROM ash_session_summary 
+      GROUP BY service_name
+)
+, graph_unit AS
+(
+     SELECT GREATEST(CEIL(MAX(SUM(session_count))/100),1) divider
+       FROM ash_session_summary
+     GROUP BY sample_time 
+)
+SELECT a.sample_time
+     , MAX(DECODE(r.rank,1,a.service_name,' ')) rank1_service
+     , MAX(DECODE(r.rank,2,a.service_name,' ')) rank2_service
+     , MAX(DECODE(r.rank,3,a.service_name,' ')) rank3_service
+     , MAX(DECODE(r.rank,4,a.service_name,' ')) rank4_service
+     , SUM(DECODE(r.rank,1,a.session_count,0)) rank1
+     , SUM(DECODE(r.rank,2,a.session_count,0)) rank2
+     , SUM(DECODE(r.rank,3,a.session_count,0)) rank3
+     , SUM(DECODE(r.rank,4,a.session_count,0)) rank4
+     , SUM(CASE WHEN r.rank >= 5 THEN a.session_count ELSE 0 END) rank_others
+     , TRIM(RPAD(' ',ROUND(SUM(DECODE(r.rank,1,a.session_count,0))/g.divider),'#')) 
+       || TRIM(RPAD(' ',ROUND(SUM(DECODE(r.rank,2,a.session_count,0))/g.divider),'%')) 
+       || TRIM(RPAD(' ',ROUND(SUM(DECODE(r.rank,3,a.session_count,0))/g.divider),'&'))  
+       || TRIM(RPAD(' ',ROUND(SUM(DECODE(r.rank,4,a.session_count,0))/g.divider),'^'))  
+       || TRIM(RPAD(' ',ROUND(SUM(CASE WHEN r.rank >= 5 THEN a.session_count ELSE 0 END)/g.divider),'*'))  
+         Graph
+  FROM ash_session_summary a
+       JOIN ash_rank r ON r.service_name = a.service_name
+       JOIN graph_unit g on g.divider >= 1
+WHERE 1=1 
+GROUP BY a.sample_time, g.divider
+ORDER BY a.sample_Time
+;
+
+
+
+
+@@footer