trace全过程

alter session set sql_trace=true;

select * from t;

 alter session set sql_trace=false;

--使用10064事件

alter system set events '10046 trace name context forever,level 4';

select * from mv_empdd a
where a.hiredate=(select max(hiredate) from emp where hiredate

alter system set events '10046 trace name context off';

--得到trace文件
--------------------------
SELECT d.VALUE
|| '/'
|| LOWER (RTRIM (i.INSTANCE, CHR (0)))
|| '_ora_'
|| p.spid
|| '.trc' trace_file_name
FROM (SELECT p.spid
FROM SYS.v$mystat m, SYS.v$session s, SYS.v$process p
WHERE m.statistic# = 1 AND s.SID = m.SID AND p.addr = s.paddr) p,
(SELECT t.INSTANCE
FROM SYS.v$thread t, SYS.v$parameter v
WHERE v.NAME = 'thread'
AND (v.VALUE = 0 OR t.thread# = TO_NUMBER (v.VALUE))) i,
(SELECT VALUE
FROM SYS.v$parameter
WHERE NAME = 'user_dump_dest') d

tkprof orcl_ora_5348.trc G:\yi\160trace.txt print=100 record=sql936.txt sys=no explain=scott/1 

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