oracle执行计划走偏处理步骤

Posted 2021-01-04 请登录

-- sql执行时间
select a.EXECUTIONS,a.ELAPSED_TIME,a.ELAPSED_TIME/a.EXECUTIONS/1000/1000 as 秒,a.SQL_ID,a.HASH_VALUE,a.address,a.SQL_TEXT from gv$session b,gv$sql a where a.hash_value=b.SQL_HASH_VALUE and username in (‘ZLCFTPUB‘,‘ZLCFTUSER‘) and status=‘ACTIVE‘;
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select sql_id,a.* from gv$session a where username in(‘ZLCFTPUB‘,‘ZLCFTUSER‘) and status=‘ACTIVE‘;
-- select ‘alter system kill session ‘‘‘||sid||‘,‘||serial#||‘‘‘;‘ from gv$session where username=‘ZLCFTPUB‘ and status=‘ACTIVE‘

select * from gv$sql a where a.PARSING_SCHEMA_NAME in(‘ZLCFTPUB‘,‘ZLCFTUSER‘);

-- 执行计划解析
select * from table(dbms_xplan.display_cursor(‘0nx7fbv1w5xg2‘,null,‘ADVANCED ALLSTATS LAST PEEKED_BINDS‘)) --where PLAN_TABLE_OUTPUT like ‘%FULL%‘;
select * from table(dbms_xplan.display_cursor(‘0nx7fbv1w5xg2‘));
select * from table(dbms_xplan.display_awr(‘0nx7fbv1w5xg2‘));

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-- sql语句
select * from v$sql where sql_id=‘0nx7fbv1w5xg2‘

-- 存储过程
SELECT OBJECT_NAME,CREATED,LAST_DDL_TIME FROM USER_OBJECTS WHERE OBJECT_TYPE =‘PROCEDURE‘ order by last_ddl_time desc;

-- 最新执行的sql
select sql_text,last_load_time from v$sql order by last_load_time desc;