[20220111]完善tpt ashash_index_helper脚本.txt --//定位索引问题很好,但是有时候开发执行不需要优化,主要原因可能他们的带入参数使用非绑定变量,有时候出现隐式转换, --//又时候仅仅执行此事很少,这类语句要排除在优化范围之外.修改ashash_index_helper脚本,加入一个查询字段lower(module). $ cat ash_index_helper.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. SET LINESIZE 999 PAGESIZE 5000 TRIMOUT ON TRIMSPOOL ON COL accessed_table HEAD Accessed_Table FOR a20 COL aindex_operation HEAD Plan_Operation FOR a60 COL aindex_predicates HEAD PREDICATES FOR a60 truncate COL obj_alias_qbc_name FOR a40 COL options FOR a30 COL AAS FOR 9999.9 COL cpu_pct HEAD CPU FOR A5 COL wait_pct HEAD WAIT FOR A5 COL ela_sec_exec HEAD "ELA_SEC/EXEC" FOR 9999990.999 COL aindex_plan_hash_value HEAD PLAN_HASH_VALUE PRINT COL aindex_sql_id HEAD SQL_ID NOPRINT COL aindex_sql_child HEAD "CHILD" PRINT COL aindex_sample_time HEAD SAMPLE_HOUR COL projection FOR A520 COL pct_child HEAD "Activity %" FOR A8 COL pct_child_vis HEAD "Visual" FOR A12 COL aindex_id HEAD "ID" FOR 9999 COL aindex_parent_id HEAD "PID" FOR 9999 col module1 format a20 PROMPT PROMPT -- Santa's Little (Index) Helper BETA v0.5 - by Tanel Poder ( https://tanelpoder.com ) WITH tab AS (SELECT /*+ NO_MERGE */ owner, table_name, num_rows FROM dba_tables WHERE UPPER(table_name) LIKE UPPER(CASE WHEN INSTR('&2','.') > 0 THEN SUBSTR('&2',INSTR('&2','.')+1) ELSE '&2' END ) ESCAPE '\' AND owner LIKE CASE WHEN INSTR('&2','.') > 0 THEN UPPER(SUBSTR('&2',1,INSTR('&2','.')-1)) ELSE user END ESCAPE '\' ), ind AS (SELECT /*+ NO_MERGE */ owner, index_name, table_owner, table_name FROM dba_indexes WHERE (table_owner, table_name) IN (SELECT owner, table_name FROM tab)), sample_times AS ( select * from dual ), sq AS ( SELECT count(*) samples , ash.sql_id , ash.sql_child_number , ash.sql_plan_hash_value , NVL(ash.sql_plan_line_id,1) sql_plan_line_id -- this is because simple "planless" operations like single-row insert , ash.sql_plan_operation , ash.sql_plan_options , ash.session_state , ash.wait_class , ash.event , lower(ash.module) module1 FROM v$active_session_history ash WHERE 1=1 AND ash.sql_plan_operation IN ('TABLE ACCESS', 'INDEX') AND ash.sql_id LIKE '&1' AND ash.sample_time BETWEEN &3 AND &4 GROUP BY ash.sql_id , ash.sql_child_number , ash.sql_plan_hash_value , NVL(ash.sql_plan_line_id,1) , ash.sql_plan_operation , ash.sql_plan_options , ash.session_state , ash.wait_class , ash.event , lower(ash.module) ), ash_and_plan AS ( SELECT plan.sql_id , plan.child_number , plan.plan_hash_value , sq.samples seconds , LPAD(TO_CHAR(ROUND(RATIO_TO_REPORT(sq.samples) OVER (PARTITION BY sq.sql_id, sq.sql_plan_hash_value) * 100, 1), 999.9)||' %',8) pct_child , '|'||RPAD( NVL( LPAD('#', ROUND(RATIO_TO_REPORT(sq.samples) OVER (PARTITION BY sq.sql_id, sq.sql_plan_hash_value) * 10), '#'), ' '), 10,' ')||'|' pct_child_vis --, LPAD(plan.id,4)||CASE WHEN parent_id IS NULL THEN ' ' ELSE ' <- ' END||LPAD(plan.parent_id,4) aindex_plan_id , plan.id aindex_id , plan.parent_id aindex_parent_id , plan.operation ||' '|| plan.options || NVL2(plan.object_name, ' ['||plan.object_owner||'.'||plan.object_name ||']', null) aindex_operation , plan.object_owner , plan.object_name , plan.object_type , plan.cardinality , stat.executions , stat.elapsed_time , sq.session_state , sq.wait_class , sq.event , sq.module1 , plan.object_alias || CASE WHEN plan.qblock_name IS NOT NULL THEN ' ['|| plan.qblock_name || ']' END obj_alias_qbc_name , CASE WHEN plan.access_predicates IS NOT NULL THEN '[A:] '|| SUBSTR(plan.access_predicates,1,1994) END || CASE WHEN plan.filter_predicates IS NOT NULL THEN ' [F:] ' || SUBSTR(plan.filter_predicates,1,1994) END aindex_predicates -- , plan.projection FROM v$sql_plan plan , v$sqlstats_plan_hash stat , sq WHERE 1=1 --AND sq.sql_id(+) = plan.sql_id --AND sq.sql_child_number(+) = plan.child_number --AND sq.sql_plan_line_id(+) = plan.id --AND sq.sql_plan_hash_value(+) = plan.plan_hash_value AND sq.sql_id = plan.sql_id AND sq.sql_child_number = plan.child_number AND sq.sql_plan_line_id = plan.id AND sq.sql_plan_hash_value = plan.plan_hash_value -- AND sq.sql_id(+) = stat.sql_id AND sq.sql_plan_hash_value(+) = stat.plan_hash_value --AND sq.sql_plan_hash_value = stat.plan_hash_value AND stat.sql_id = plan.sql_id AND stat.plan_hash_value = plan.plan_hash_value -- AND plan.sql_id LIKE '&1' ---- ) SELECT * FROM ( SELECT SUM(ap.seconds) seconds , ROUND(SUM(ap.seconds) / ((CAST(&4 AS DATE) - CAST(&3 AS DATE)) * 86400), 1) AAS , LPAD(TO_CHAR(ROUND(SUM(CASE WHEN ap.session_state = 'ON CPU' THEN ap.seconds ELSE 0 END) / SUM(ap.seconds) * 100))||'%',4) cpu_pct , LPAD(TO_CHAR(ROUND(SUM(CASE WHEN ap.session_state = 'WAITING' THEN ap.seconds ELSE 0 END) / SUM(ap.seconds) * 100))||'%',4) wait_pct --, SUM(CASE WHEN ap.wait_class = 'User I/O' THEN ap.seconds ELSE 0 END) iowait_sec --, t.owner||'.'||table_name accessed_table , table_name accessed_table , ap.aindex_operation , ap.cardinality plan_card , t.num_rows table_rows , ap.cardinality / NULLIF(t.num_rows,0) * 100 filter_pct , ap.executions sql_execs , ROUND(ap.elapsed_time / NULLIF(ap.executions,0) / 1000000,3) ela_sec_exec , ap.aindex_predicates -- , COUNT(DISTINCT ap.sql_id) dist_sqlids -- , COUNT(DISTINCT ap.plan_hash_value) dist_plans , MIN(ap.sql_id) sql_id , ap.module1 -- , MAX(ap.sql_id) -- , ap.projection FROM ash_and_plan ap , (SELECT tab.*, 'TABLE' object_type, tab.owner object_owner, tab.table_name object_name FROM tab UNION ALL SELECT tab.*, 'INDEX', ind.owner object_owner, ind.index_name object_name FROM tab, ind WHERE tab.owner = ind.table_owner AND tab.table_name = ind.table_name ) t WHERE ap.object_owner = t.object_owner AND ap.object_name = t.object_name AND SUBSTR(ap.object_type,1,5) = t.object_type AND ap.seconds > 0 GROUP BY t.owner , t.table_name , ap.aindex_operation , t.num_rows , ap.cardinality , ap.executions , ap.elapsed_time , ap.aindex_predicates , ap.module1 -- , ap.projection ORDER BY seconds DESC ) WHERE rownum <= 50 /
[20220111]完善tpt ashash_index_helper脚本.txt
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时间:2026-03-03 17:23:47
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