(转)Oracle查看trace文件步骤

原文地址： http://www.2cto.com/database/201210/159305.html

Oracle查看trace文件步骤

 

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:\oracle\administrator\diag\rdbms\orcl\orcl\trace\orcl_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 Settings\Administrator>tkprof f:\oracle\administrator\diag\rdbm

s\orcl\orcl\trace\orcl_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] 

********************************************************************************  

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)