ashtop.sql这个脚本是Tanel Poder写的一个脚本，用于定位有性能问题的SQL， 此脚本在GitHub上地址为https://github.com/tanelpoder/tpt-oracle/blob/master/ash/ashtop.sql。目前的最新版本为ashtop.sql v1.2
-- 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.
---------------------------------------------------------------------------------- -- File name: ashtop.sql v1.2
-- Purpose: Display top ASH time (count of ASH samples) grouped by your
-- specified dimensions
--
-- Author: Tanel Poder
-- Copyright: (c) http://blog.tanelpoder.com--
-- Usage: -- @ashtop <grouping_cols> <filters> <fromtime> <totime>
---- Example:-- @ashtop username,sql_id session_type='FOREGROUND' sysdate-1/24 sysdate---- Other:-- This script uses only the in-memory GV$ACTIVE_SESSION_HISTORY, use
-- @dashtop.sql for accessiong the DBA_HIST_ACTIVE_SESS_HISTORY archive
--
--------------------------------Add by Kerry------------------------------------
-- 这个脚本只适用于Oracle 11g以及以上的版本，Oracle 10g中gv$active_session_history-- 没有time_model字段。
--------------------------------------------------------------------------------COL "%This" FOR A7--COL p1 FOR 99999999999999--COL p2 FOR 99999999999999--COL p3 FOR 99999999999999COL p1text FOR A30 word_wrapCOL p2text FOR A30 word_wrapCOL p3text FOR A30 word_wrapCOL p1hex FOR A17COL p2hex FOR A17COL p3hex FOR A17COL dop FOR 99COL AAS FOR 9999.9COL totalseconds HEAD "Total|Seconds" FOR 99999999COL dist_sqlexec_seen HEAD "Distinct|Execs Seen" FOR 999999
COL event FOR A42 WORD_WRAPCOL event2 FOR A42 WORD_WRAPCOL time_model_name FOR A50 WORD_WRAPCOL program2 FOR A40 TRUNCATE
COL username FOR A20 wrapCOL obj FOR A30COL objt FOR A50COL sql_opname FOR A20COL top_level_call_name FOR A30COL wait_class FOR A15SELECT*
FROM (WITH bclass AS (SELECT /*+ INLINE */ class, ROWNUM r from v$waitstat)
SELECT /*+ LEADING(a) USE_HASH(u) */
COUNT(*) totalseconds, ROUND(COUNT(*) / ((CAST(&4 AS DATE) - CAST(&3 AS DATE)) * 86400), 1) AAS
, LPAD(ROUND(RATIO_TO_REPORT(COUNT(*)) OVER () * 100)||'%',5,' ')||' |' "%This"
, &1
, TO_CHAR(MIN(sample_time), 'YYYY-MM-DD HH24:MI:SS') first_seen
, TO_CHAR(MAX(sample_time), 'YYYY-MM-DD HH24:MI:SS') last_seen
-- , MAX(sql_exec_id) - MIN(sql_exec_id)
, COUNT(DISTINCT sql_exec_start||':'||sql_exec_id) dist_sqlexec_seen
FROM (SELECTa.*
, session_id sid
, session_serial# serial
, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p1 ELSE null END, '0XXXXXXXXXXXXXXX') p1hex
, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p2 ELSE null END, '0XXXXXXXXXXXXXXX') p2hex
, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p3 ELSE null END, '0XXXXXXXXXXXXXXX') p3hex
, TRUNC(px_flags / 2097152) dop
, NVL(a.event, a.session_state)||
CASE WHEN a.event like 'enq%' AND session_state = 'WAITING'
THEN ' [mode='||BITAND(p1, POWER(2,14)-1)||']'
WHEN a.event IN (SELECT name FROM v$event_name WHERE parameter3 = 'class#')
THEN ' ['||CASE WHEN a.p3 <= (SELECT MAX(r) FROM bclass)
THEN (SELECT class FROM bclass WHERE r = a.p3)
ELSE (SELECT DECODE(MOD(BITAND(a.p3,TO_NUMBER('FFFF','XXXX')) - 17,2),0,'undo header',1,'undo data', 'error') FROM dual)
END ||']'
ELSE null
END event2 -- event is NULL in ASH if the session is not waiting (session_state = ON CPU)
, CASE WHEN a.session_type = 'BACKGROUND' OR REGEXP_LIKE(a.program, '.*([PJ]d+)') THEN
REGEXP_REPLACE(SUBSTR(a.program,INSTR(a.program,'(')), 'd', 'n')
ELSE'('||REGEXP_REPLACE(REGEXP_REPLACE(a.program, '(.*)@(.*)((.*))', '1'), 'd', 'n')||')'
END || ' ' program2
, CASE WHEN BITAND(time_model, POWER(2, 01)) = POWER(2, 01) THEN 'DBTIME ' END
||CASE WHEN BITAND(time_model, POWER(2, 02)) = POWER(2, 02) THEN 'BACKGROUND ' END
||CASE WHEN BITAND(time_model, POWER(2, 03)) = POWER(2, 03) THEN 'CONNECTION_MGMT ' END
||CASE WHEN BITAND(time_model, POWER(2, 04)) = POWER(2, 04) THEN 'PARSE ' END
||CASE WHEN BITAND(time_model, POWER(2, 05)) = POWER(2, 05) THEN 'FAILED_PARSE ' END
||CASE WHEN BITAND(time_model, POWER(2, 06)) = POWER(2, 06) THEN 'NOMEM_PARSE ' END
||CASE WHEN BITAND(time_model, POWER(2, 07)) = POWER(2, 07) THEN 'HARD_PARSE ' END
||CASE WHEN BITAND(time_model, POWER(2, 08)) = POWER(2, 08) THEN 'NO_SHARERS_PARSE ' END
||CASE WHEN BITAND(time_model, POWER(2, 09)) = POWER(2, 09) THEN 'BIND_MISMATCH_PARSE ' END
||CASE WHEN BITAND(time_model, POWER(2, 10)) = POWER(2, 10) THEN 'SQL_EXECUTION ' END
||CASE WHEN BITAND(time_model, POWER(2, 11)) = POWER(2, 11) THEN 'PLSQL_EXECUTION ' END
||CASE WHEN BITAND(time_model, POWER(2, 12)) = POWER(2, 12) THEN 'PLSQL_RPC ' END
||CASE WHEN BITAND(time_model, POWER(2, 13)) = POWER(2, 13) THEN 'PLSQL_COMPILATION ' END
||CASE WHEN BITAND(time_model, POWER(2, 14)) = POWER(2, 14) THEN 'JAVA_EXECUTION ' END
||CASE WHEN BITAND(time_model, POWER(2, 15)) = POWER(2, 15) THEN 'BIND ' END
||CASE WHEN BITAND(time_model, POWER(2, 16)) = POWER(2, 16) THEN 'CURSOR_CLOSE ' END
||CASE WHEN BITAND(time_model, POWER(2, 17)) = POWER(2, 17) THEN 'SEQUENCE_LOAD ' END
||CASE WHEN BITAND(time_model, POWER(2, 18)) = POWER(2, 18) THEN 'INMEMORY_QUERY ' END
||CASE WHEN BITAND(time_model, POWER(2, 19)) = POWER(2, 19) THEN 'INMEMORY_POPULATE ' END
||CASE WHEN BITAND(time_model, POWER(2, 20)) = POWER(2, 20) THEN 'INMEMORY_PREPOPULATE ' END
||CASE WHEN BITAND(time_model, POWER(2, 21)) = POWER(2, 21) THEN 'INMEMORY_REPOPULATE ' END
||CASE WHEN BITAND(time_model, POWER(2, 22)) = POWER(2, 22) THEN 'INMEMORY_TREPOPULATE ' END
||CASE WHEN BITAND(time_model, POWER(2, 23)) = POWER(2, 23) THEN 'TABLESPACE_ENCRYPTION ' END time_model_name
FROM gv$active_session_history a) a, dba_users u
, (SELECTobject_id,data_object_id,owner,object_name,subobject_name,object_type
, owner||'.'||object_name obj, owner||'.'||object_name||' ['||object_type||']' objt
FROM dba_objects) o WHEREa.user_id = u.user_id (+)
AND a.current_obj# = o.object_id(+) AND &2AND sample_time BETWEEN &3 AND &4
GROUP BY
&1
ORDER BY
TotalSeconds DESC, &1
)
WHEREROWNUM <= 15
/
简单使用案例：
@ashtop username,sql_id session_type='FOREGROUND' trunc(sysdate)+8/24 sysdate@ashtop username,sql_id session_type='BACKGROUND' trunc(sysdate)+8/24 sysdate@ashtop username,sql_id 1=1 sysdate-30/1440 sysdate
注意，这个脚本只适用于Oracle 11g以及以上的版本，Oracle 10g中gv$active_session_history，没有time_model、px_flags等字段。
下面是我简单魔改的适用于Oracle 10g的脚本：ashtop_10g.sql。
-- 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.
---------------------------------------------------------------------------------- -- File name: ashtop.sql v1.2
-- Purpose: Display top ASH time (count of ASH samples) grouped by your
-- specified dimensions
--
-- Author: Tanel Poder
-- Copyright: (c) http://blog.tanelpoder.com--
-- Usage: -- @ashtop <grouping_cols> <filters> <fromtime> <totime>
---- Example:-- @ashtop username,sql_id session_type='FOREGROUND' sysdate-1/24 sysdate---- Other:-- This script uses only the in-memory GV$ACTIVE_SESSION_HISTORY, use
-- @dashtop.sql for accessiong the DBA_HIST_ACTIVE_SESS_HISTORY archive
--
--------------------------------Add by Kerry------------------------------------
-- Oracle 10g中gv$active_session_history 没有time_model、px_flags等字段。 --------------------------------------------------------------------------------COL "%This" FOR A7--COL p1 FOR 99999999999999--COL p2 FOR 99999999999999--COL p3 FOR 99999999999999COL p1text FOR A30 word_wrapCOL p2text FOR A30 word_wrapCOL p3text FOR A30 word_wrapCOL p1hex FOR A17COL p2hex FOR A17COL p3hex FOR A17COL dop FOR 99COL AAS FOR 9999.9COL totalseconds HEAD "Total|Seconds" FOR 99999999COL dist_sqlexec_seen HEAD "Distinct|Execs Seen" FOR 999999
COL event FOR A42 WORD_WRAPCOL event2 FOR A42 WORD_WRAPCOL time_model_name FOR A50 WORD_WRAPCOL program2 FOR A40 TRUNCATE
COL username FOR A20 wrapCOL obj FOR A30COL objt FOR A50COL sql_opname FOR A20COL top_level_call_name FOR A30COL wait_class FOR A15SELECT*
FROM (WITH bclass AS (SELECT /*+ INLINE */ class, ROWNUM r from v$waitstat)
SELECT /*+ LEADING(a) USE_HASH(u) */
COUNT(*) totalseconds, ROUND(COUNT(*) / ((CAST(&4 AS DATE) - CAST(&3 AS DATE)) * 86400), 1) AAS
, LPAD(ROUND(RATIO_TO_REPORT(COUNT(*)) OVER () * 100)||'%',5,' ')||' |' "%This"
, &1
, TO_CHAR(MIN(sample_time), 'YYYY-MM-DD HH24:MI:SS') first_seen
, TO_CHAR(MAX(sample_time), 'YYYY-MM-DD HH24:MI:SS') last_seen
-- , MAX(sql_exec_id) - MIN(sql_exec_id)
-- , COUNT(DISTINCT sql_exec_start||':'||sql_exec_id) dist_sqlexec_seen
FROM (SELECTa.*
, session_id sid
, session_serial# serial
, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p1 ELSE null END, '0XXXXXXXXXXXXXXX') p1hex
, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p2 ELSE null END, '0XXXXXXXXXXXXXXX') p2hex
, TO_CHAR(CASE WHEN session_state = 'WAITING' THEN p3 ELSE null END, '0XXXXXXXXXXXXXXX') p3hex
--, TRUNC(px_flags / 2097152) dop
, NVL(a.event, a.session_state)||
CASE WHEN a.event like 'enq%' AND session_state = 'WAITING'
THEN ' [mode='||BITAND(p1, POWER(2,14)-1)||']'
WHEN a.event IN (SELECT name FROM v$event_name WHERE parameter3 = 'class#')
THEN ' ['||CASE WHEN a.p3 <= (SELECT MAX(r) FROM bclass)
THEN (SELECT class FROM bclass WHERE r = a.p3)
ELSE (SELECT DECODE(MOD(BITAND(a.p3,TO_NUMBER('FFFF','XXXX')) - 17,2),0,'undo header',1,'undo data', 'error') FROM dual)
END ||']'
ELSE null
END event2 -- event is NULL in ASH if the session is not waiting (session_state = ON CPU)
, CASE WHEN a.session_type = 'BACKGROUND' OR REGEXP_LIKE(a.program, '.*([PJ]d+)') THEN
REGEXP_REPLACE(SUBSTR(a.program,INSTR(a.program,'(')), 'd', 'n')
ELSE'('||REGEXP_REPLACE(REGEXP_REPLACE(a.program, '(.*)@(.*)((.*))', '1'), 'd', 'n')||')'
END || ' ' program2
FROM gv$active_session_history a) a, dba_users u
, (SELECTobject_id,data_object_id,owner,object_name,subobject_name,object_type
, owner||'.'||object_name obj, owner||'.'||object_name||' ['||object_type||']' objt
FROM dba_objects) o WHEREa.user_id = u.user_id (+)
AND a.current_obj# = o.object_id(+) AND &2AND sample_time BETWEEN &3 AND &4
GROUP BY
&1
ORDER BY
TotalSeconds DESC, &1
)
WHEREROWNUM <= 15
/
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