2026-03-12 20:23:15
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tpt/ash/ashtopsum.sql
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tpt/ash/ashtopsum.sql
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-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
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-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
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--------------------------------------------------------------------------------
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--
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-- File name: ashtopsum.sql v1.3
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-- Purpose: Display top ASH time (count of ASH samples) grouped by your
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-- specified dimensions AND (potentially lossy) SUM of IO rate metrics
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--
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-- Author: Tanel Poder
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-- Copyright: (c) http://blog.tanelpoder.com
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--
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-- Usage:
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-- @ashtopsum <grouping_cols> <filters> <fromtime> <totime>
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--
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-- Example:
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-- @ashtopsum username,sql_id session_type='FOREGROUND' sysdate-1/24 sysdate
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--
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-- Other:
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-- This script uses only the in-memory GV$ACTIVE_SESSION_HISTORY, use
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-- @dashtopsum.sql for accessiong the DBA_HIST_ACTIVE_SESS_HISTORY archive
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--
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--------------------------------------------------------------------------------
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COL "%This" FOR A7
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--COL p1 FOR 99999999999999
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--COL p2 FOR 99999999999999
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--COL p3 FOR 99999999999999
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COL p1text FOR A30 word_wrap
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COL p2text FOR A30 word_wrap
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COL p3text FOR A30 word_wrap
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COL p1hex FOR A17
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COL p2hex FOR A17
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COL p3hex FOR A17
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COL dop FOR 99
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COL AAS FOR 9999.9
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COL totalseconds HEAD "Total|Seconds" FOR 99999999
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COL dist_sqlexec_seen HEAD "Distinct|Execs Seen" FOR 999999
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COL dist_timestamps HEAD "Distinct|Tstamps" FOR 999999
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COL event FOR A42 WORD_WRAP
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COL event2 FOR A42 WORD_WRAP
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COL time_model_name FOR A50 WORD_WRAP
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COL program2 FOR A40 TRUNCATE
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COL username FOR A20 wrap
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COL obj FOR A30
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COL objt FOR A50
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COL sql_opname FOR A20
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COL top_level_call_name FOR A30
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COL wait_class FOR A15
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COL rd_rq FOR 999,999,999
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COL wr_rq FOR 999,999,999
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COL rd_mb FOR 999,999,999
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COL wr_mb FOR 999,999,999
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COL pgamem_mb FOR 9,999,999
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COL tempspc_mb FOR 99,999,999
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PROMPT This is an experimental script as some documentation/explanation is needed.
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PROMPT The ASH "delta" metrics are not tied to individual SQL_IDs or wait events,
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PROMPT They are valid in the session scope (and related mostly static attributes,
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PROMPT like PROGRAM, MACHINE, MODULE). Which SQL_ID/operation/event happens to be
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PROMPT active when ASH samples its data is just matter of luck.
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SELECT
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*
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FROM (
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WITH bclass AS (SELECT /*+ INLINE */ class, ROWNUM r from v$waitstat)
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SELECT /*+ LEADING(a) USE_HASH(u) */
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COUNT(*) totalseconds
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, ROUND(COUNT(*) / ((CAST(&4 AS DATE) - CAST(&3 AS DATE)) * 86400), 1) AAS
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, LPAD(ROUND(RATIO_TO_REPORT(COUNT(*)) OVER () * 100)||'%',5,' ')||' |' "%This"
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, SUM(delta_read_io_requests) rd_rq
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, SUM(delta_write_io_requests) wr_rq
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, SUM(delta_read_io_bytes)/1048576 rd_mb
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, SUM(delta_write_io_bytes)/1048576 wr_mb
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--, SUM(delta_interconnect_io_bytes)
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--, SUM(delta_read_mem_bytes)
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, MAX(pga_allocated)/1048576 pgamem_mb
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, MAX(temp_space_allocated)/1048576 tempspc_mb
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, &1
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, TO_CHAR(MIN(sample_time), 'YYYY-MM-DD HH24:MI:SS') first_seen
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, TO_CHAR(MAX(sample_time), 'YYYY-MM-DD HH24:MI:SS') last_seen
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-- , MAX(sql_exec_id) - MIN(sql_exec_id)
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, COUNT(DISTINCT sql_exec_start||':'||sql_exec_id) dist_sqlexec_seen
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, COUNT(DISTINCT sample_time) dist_timestamps
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FROM
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(SELECT
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a.*
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, session_id sid
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, session_serial# serial
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, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p1 ELSE null END, '0XXXXXXXXXXXXXXX') p1hex
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, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p2 ELSE null END, '0XXXXXXXXXXXXXXX') p2hex
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, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p3 ELSE null END, '0XXXXXXXXXXXXXXX') p3hex
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, TRUNC(px_flags / 2097152) dop
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, NVL(a.event, a.session_state)||
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CASE
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WHEN a.event like 'enq%' AND session_state = 'WAITING'
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THEN ' [mode='||BITAND(p1, POWER(2,14)-1)||']'
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WHEN a.event IN (SELECT name FROM v$event_name WHERE parameter3 = 'class#')
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THEN ' ['||CASE WHEN a.p3 <= (SELECT MAX(r) FROM bclass)
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THEN (SELECT class FROM bclass WHERE r = a.p3)
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ELSE (SELECT DECODE(MOD(BITAND(a.p3,TO_NUMBER('FFFF','XXXX')) - 17,2),0,'undo header',1,'undo data', 'error') FROM dual)
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END ||']'
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ELSE null
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END event2 -- event is NULL in ASH if the session is not waiting (session_state = ON CPU)
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, CASE WHEN a.session_type = 'BACKGROUND' OR REGEXP_LIKE(a.program, '.*\([PJ]\d+\)') THEN
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REGEXP_REPLACE(SUBSTR(a.program,INSTR(a.program,'(')), '\d', 'n')
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ELSE
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'('||REGEXP_REPLACE(REGEXP_REPLACE(a.program, '(.*)@(.*)(\(.*\))', '\1'), '\d', 'n')||')'
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END || ' ' program2
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, CASE WHEN BITAND(time_model, POWER(2, 01)) = POWER(2, 01) THEN 'DBTIME ' END
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||CASE WHEN BITAND(time_model, POWER(2, 02)) = POWER(2, 02) THEN 'BACKGROUND ' END
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||CASE WHEN BITAND(time_model, POWER(2, 03)) = POWER(2, 03) THEN 'CONNECTION_MGMT ' END
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||CASE WHEN BITAND(time_model, POWER(2, 04)) = POWER(2, 04) THEN 'PARSE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 05)) = POWER(2, 05) THEN 'FAILED_PARSE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 06)) = POWER(2, 06) THEN 'NOMEM_PARSE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 07)) = POWER(2, 07) THEN 'HARD_PARSE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 08)) = POWER(2, 08) THEN 'NO_SHARERS_PARSE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 09)) = POWER(2, 09) THEN 'BIND_MISMATCH_PARSE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 10)) = POWER(2, 10) THEN 'SQL_EXECUTION ' END
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||CASE WHEN BITAND(time_model, POWER(2, 11)) = POWER(2, 11) THEN 'PLSQL_EXECUTION ' END
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||CASE WHEN BITAND(time_model, POWER(2, 12)) = POWER(2, 12) THEN 'PLSQL_RPC ' END
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||CASE WHEN BITAND(time_model, POWER(2, 13)) = POWER(2, 13) THEN 'PLSQL_COMPILATION ' END
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||CASE WHEN BITAND(time_model, POWER(2, 14)) = POWER(2, 14) THEN 'JAVA_EXECUTION ' END
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||CASE WHEN BITAND(time_model, POWER(2, 15)) = POWER(2, 15) THEN 'BIND ' END
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||CASE WHEN BITAND(time_model, POWER(2, 16)) = POWER(2, 16) THEN 'CURSOR_CLOSE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 17)) = POWER(2, 17) THEN 'SEQUENCE_LOAD ' END
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||CASE WHEN BITAND(time_model, POWER(2, 18)) = POWER(2, 18) THEN 'INMEMORY_QUERY ' END
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||CASE WHEN BITAND(time_model, POWER(2, 19)) = POWER(2, 19) THEN 'INMEMORY_POPULATE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 20)) = POWER(2, 20) THEN 'INMEMORY_PREPOPULATE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 21)) = POWER(2, 21) THEN 'INMEMORY_REPOPULATE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 22)) = POWER(2, 22) THEN 'INMEMORY_TREPOPULATE ' END
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||CASE WHEN BITAND(time_model, POWER(2, 23)) = POWER(2, 23) THEN 'TABLESPACE_ENCRYPTION ' END time_model_name
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FROM gv$active_session_history a) a
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, dba_users u
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, (SELECT
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object_id,data_object_id,owner,object_name,subobject_name,object_type
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, owner||'.'||object_name obj
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, owner||'.'||object_name||' ['||object_type||']' objt
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FROM dba_objects) o
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WHERE
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a.user_id = u.user_id (+)
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AND a.current_obj# = o.object_id(+)
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AND &2
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AND sample_time BETWEEN &3 AND &4
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GROUP BY
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&1
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ORDER BY
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TotalSeconds DESC
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, &1
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)
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WHERE
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ROWNUM <= 20
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/
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