oracle 10046 跟踪
---------------------------------------------10046---------------------------------------------------
--如果要准确的性能指标，需要先清理shared_pool和buffer_cache
alter system flush shared_pool;
alter system flush buffer_cache;
--开启session级10046 event trace
alter session set events '10046 trace name context forever, level 12';
--执行你的SQL
<sql_text>
--关闭session级10046 event trace
alter session set events '10046 trace name context off';
--获取trace文件的路径
select d.value || '/' || lower(rtrim(i.instance, chr(0))) || '_ora_' ||p.spid|| '.trc' trace_file_name
???????? from (select p.spid
????????????? from v$mystat m, v$session s, v$process p
???????????? where m.statistic# = 1
?????????????? and s.sid = m.sid
???????? ??????and p.addr = s.paddr) p,
?????????? (select t.instance
????????????? from v$thread t, v$parameter v
??????????? where v.name = 'thread'
????????????? and (v.value = 0 or t.thread# = to_number(v.value))) i,
????????? (select value from v$parameter where name = 'user_dump_dest') d;
