1.获得当前trace文件生成路径
SQL> select tracefile from v$process where addr in (select paddr from v$session where sid in (select sid from v$mystat));
TRACEFILE
-------------------------------------------------------------------------------------------------------------------------------
f:Oracleadministratordiagrdbmsorclorcltraceorcl_ora_1160.trc
2.开启当前session的trace
SQL> alter session set sql_trace=true;
SQL> select count(*) from t1;
3.转换trc文件内容为可读的输出结果
C:Documents and SettingsAdministrator>tkprof f:oracleadministratordiagrdbm
sorclorcltraceorcl_ora_1160.trc output=c:aa.txt
TKPROF: Release 11.2.0.1.0 - Development on 星期六 10月 6 23:51:07 2012
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
4.打开c:aa.txt, 就会看到关于SQL语句 ‘ select count(*) from t1;’ 的执行计划
********************************************************************************
SQL ID: 5bc0v4my7dvr5
Plan Hash: 3724264953
select count(*)
from
t1
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.04 0 1 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 2 0.03 0.01 0 1070 0 1
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 4 0.03 0.06 0 1071 0 1
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: 91
Rows Row Source Operation
------- ---------------------------------------------------
1 SORT AGGREGATE (cr=1070 pr=0 pw=0 time=0 us)
72597 TABLE ACCESS FULL T1 (cr=1070 pr=0 pw=0 time=172543 us cost=298 size=0 card=66014)
********************************************************************************
