Oracle EBS SQL Trace日志收集的方法

http://www.linuxidc.com/Linux/2012-06/63322.htm

Raw Trace的收集方法

1. 打开Trace，Help > Diagnostics > Trace > Trace > Trace with Binds and Waits

Trace项代表的意思

•No Trace – turns trace off.

•Regular Trace – generates a regular SQL trace by performing the following statement:

ALTER SESSION SET SQL_TRACE = TRUE;

•Trace with Binds – writes bind variable values in the SQL trace file

•Trace with Waits – writes wait events in the SQL trace file

•Trace with Binds and Waits – writes both bind variable values and wait events in the SQL trace file

2.执行业务功能

3.关闭Trace，Help > Diagnostics > Trace > Trace > No Trace

系统会弹出一个窗口，告诉你Trace文件所在的目录。

这个目录实际上是数据库系统参数表(v$parameter)中的user_dump_dest的值，可以执行下边的SQL来找到Trace文件所在的目录

1.SELECT value FROM v$parameter WHERE name = 'user_dump_dest';

2.

3.Output:/slot/ems7061/Oracle/db/tech_st/11.2.0/admin/az1mu213_rws60145rems/diag/rdbms/az1mu213/az1mu213/trace

trace文件名后边的那个数字是Database Server PID，也可以从Help>About中找到。

TKPROF

之前我们收集的trace日志仍为Raw Trace，如果要做性能分析的话，往往要转换为TKPROF，TKPROF可以把Raw Trace转换为更易读的形式。

1.TKPROF Command

2.$tkprof tracefile outputfile [explain= ] [table= ] [print= ] [insert= ] [sys= ] [sort= ] ...

3.

4.Sample:

5.TKPROF raw_trace.trc OUTPUTA.TKPROF EXPLAIN=scott/tiger SYS=NO SORT=(EXECPU,FCHCPU)

tracefile：你要分析的trace文件

outputfile：格式化后的文件

explain=user/password@connectstring

table=schema.tablename

注1：这两个参数是一起使用的，通过连接数据库对在trace文件中出现的每条sql语句查看执行计划，并将之输出到outputfile中

注2：该table必须是数据库中不存在的，如果存在会报错

print=n：只列出最初N个sql执行语句

insert=filename：会产生一个sql文件，运行此文件可将收集到的数据insert到数据库表中

sys=no：过滤掉由sys执行的语句

record=filename：可将非嵌套执行的sql语句过滤到指定的文件中去

waits=yes|no：是否统计任何等待事件

aggregate=yes|no：是否将相同sql语句的执行信息合计起来，默认为yes

sort=option：设置排序选项，选项如下：

prscnt：number of times parse was called

prscpu：cpu time parsing

prsela：elapsed time parsing

prsdsk：number of disk reads during parse

prsqry：number of buffers for consistent read during parse

prscu：number of buffers for current read during parse

prsmis：number of misses in library cache during parse

execnt：number of execute was called

execpu：cpu time spent executing

exeela：elapsed time executing

exedsk：number of disk reads during execute

exeqry：number of buffers for consistent read during execute

execu：number of buffers for current read during execute

exerow：number of rows processed during execute

exemis：number of library cache misses during execute

fchcnt：number of times fetch was called

fchcpu：cpu time spent fetching

fchela：elapsed time fetching

fchdsk：number of disk reads during fetch

fchqry：number of buffers for consistent read during fetch

fchcu：number of buffers for current read during fetch

fchrow：number of rows fetched

userid：userid of user that parsed the cursor

1.Tkprof: Release 9.2.0.1.0 - Production on Tue Dec 24 15:32:43 2002

2.Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

3.

4.Trace file: ORCL102_ora_3064.trc

5.

6.Sort options: default

7.

8.********************************************************************************

9.count = number of times OCI procedure was executed

10.cpu = cpu time in seconds executing

11.elapsed = elapsed time in seconds executing

12.disk = number of physical reads of buffers from disk

13.query = number of buffers gotten for consistent read

14.current = number of buffers gotten in current mode (usually for update)

15.rows = number of rows processed by the fetch or execute call

16.********************************************************************************

17.

18.select *

19.from

20. employee where emp_id = 3737

21.

22.call count cpu elapsed disk query current rows

23.------- ------ -------- ---------- ---------- ---------- ---------- ----------

24.Parse 10 0.00 0.03 0 0 0 0

25.Execute 10 0.00 0.00 0 0 0 0

26.Fetch 20 0.34 0.35 72 4730 0 10

27.------- ------ -------- ---------- ---------- ---------- ---------- ----------

28.total 40 0.34 0.39 72 4730 0 10

29.

30.Misses in library cache during parse: 1

31.Optimizer goal: CHOOSE

32.Parsing user id: 59

33.

34.Rows Row Source Operation

35.------- ---------------------------------------------------

36. 1 TABLE ACCESS FULL EMPLOYEE

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query1：Select value from v$parameter

where name = 'user_dump_dest';

query2： Select oracle_process_id

from fnd_concurrent_requests

where request_id = 2754278

command：tkprof dv11_ora_7830_OPERATIONS_CR2759648.trc dv11_ora_7830_OPERATIONS_CR2759648.tkp sort=prsdsk,exedsk,fchdsk

1，在并发程序定义界面勾上trace选项

2，执行并发程序

3，query1找到生成的trc文件的路径，query2找到文件名中的processing_id

4，tkprof生成tkp文件

5，选取tkp文件中的前5个query在Toad里Explain
Plan

使用tkprof
命令在DV11
要先运行一下环境变量的文件
. ./appenv.sh $env $bash

appenv.sh所在目录为：/rdbms/apps1159

要先cd到/u01/oracle/DV11/dv11db/9.2.0/admin/DV11_prcsgisol03/udump目录下，再执行tkprof
tracefile outputfile