一个查找引起latch free的脚本

select to_char(sysdate,'yyyymmdd hh24:mi:ss') from dual;
set echo on
set pagesize 100
set linesize 100
COLUMN EVENT FORMAT A26
select event,sid,p1,p2,p3, SECONDS_IN_WAIT from v$session_wait where event not like 'SQL%'
and event != 'rdbms ipc message' and event!='jobq slave wait' and event!='wakeup time manager'
and event!='pipe get';

select sql_text,buffer_gets,executions,hash_value, CPU_TIME/1000000, ELAPSED_TIME/1000000 from v$sqlarea where address in (select sql_address
from v$session where sid in (select sid from v$session_wait
WHERE EVENT = 'latch free' and p2=157));

select sid,module,status,machine from v$session where sid in
(select sid from v$session_wait
WHERE EVENT = 'latch free' and p2=157);