Oracle 根据SQL_ID查询并杀会话，清空执行计划缓冲池
2018年09月06日 10:31:40 小学生汤米 阅读数：473
1. 查询最近五分钟内最高频次SQL，查看event
select t.SQL_OPNAME,t.SQL_ID,count(*) from v$active_session_history t where t.SAMPLE_TIME>to_timestamp('20180906-09:55:00','YYYYMMDD-hh24:mi:ss') and t.SESSION_TYPE='FOREGROUND'
group by t.SQL_OPNAME,t.SQL_ID order by count(*) desc;
2、 根据SQL 查询到操作用户
select s.username from v$active_session_history t,dba_users s where t.USER_ID=s.user_id and t.SQL_ID='0nx7fbv1w5xg2';
3、查询并获取当前sql的杀会话语句
select 'alter system kill session '''|| t.SID||','||t.SERIAL#||''';' from v$session t where t.SQL_ID='0nx7fbv1w5xg2';
4、查询并获取当前会话的执行计划清空过程语句
select SQL_TEXT,sql_id, address, hash_value, executions, loads, parse_calls, invalidations
from v$sqlarea where sql_id='0nx7fbv1w5xg2';
call sys.dbms_shared_pool.purge('0000000816530A98,3284334050','c');