10046事件跟踪会话sql

背景知识：

10046 事件按照收集信息内容，可以分成4个级别：

Level 1：等同于SQL_TRACE 的功能

Level 4：在Level 1的基础上增加收集绑定变量的信息

Level 8：在Level 1 的基础上增加等待事件的信息

Level 12：等同于Level 4+Level 8, 即同时收集绑定变量信息和等待事件信息。

一：跟踪当前会话sql

1. sys用户给执行跟踪dblink用户授权
SQL> grant alter session to dblink;

Grant succeeded.

2. 返回dblink用户操作
SQL> show user;
USER is "DBLINK"

3. 查询sid,serial#
SQL> select sid,serial# from v$session where username='DBLINK';

SID SERIAL#
---------- ----------
45 14

4. 查询当前用户的trace文件
SQL> select * from v$diag_info where name like 'Default%';

INST_ID NAME
---------- ----------------------------------------------------------------
VALUE
--------------------------------------------------------------------------------
1 Default Trace File
/home/oracle/app/diag/rdbms/orcl/orcl/trace/orcl_ora_2823.trc

5. 启动10046事件
SQL> alter session set events '10046 trace name context forever, level 12';

Session altered.

6. 执行测试sql（即将被跟踪的sql）
SQL> variable a number; #含有绷定变量的sql
SQL> exec :a:=2;
PL/SQL procedure successfully completed.

SQL> select count(*) from dba_objects where object_id=:a;

COUNT(*)
----------

7. 关闭10046事件
SQL> alter session set events '10046 trace name context off';

Session altered.

8.1 查看原始10046后的trace文件注意：10046事件的trace文件内容是sql按时间顺序执行的结果

[oracle@11g ~]$ vi /home/oracle/app/diag/rdbms/orcl/orcl/trace/orcl_ora_2823.trc

Trace file /home/oracle/app/diag/rdbms/orcl/orcl/trace/orcl_ora_2823.trc
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORACLE_HOME = /home/oracle/app/oracle/product/11.2.0/dbhome_1
System name: Linux
Node name: 11g
Release: 2.6.32-573.el6.x86_64
Version: #1 SMP Thu Jul 23 15:44:03 UTC 2015
Machine: x86_64
Instance name: orcl
Redo thread mounted by this instance: 1
Oracle process number: 32
Unix process pid: 2823, image: oracle@11g (TNS V1-V3)

*** 2014-11-19 04:42:30.941
*** SESSION ID:(45.14) 2014-11-19 04:42:30.941
*** CLIENT ID:() 2014-11-19 04:42:30.941
*** SERVICE NAME:(SYS$USERS) 2014-11-19 04:42:30.941
*** MODULE NAME:(SQL*Plus) 2014-11-19 04:42:30.941
*** ACTION NAME:() 2014-11-19 04:42:30.941

WAIT #2: nam='SQL*Net message to client' ela= 2 driver id=1650815232 #bytes=1 p3=0 obj#=-1 tim=1416390150940558

*** 2014-11-19 04:44:47.004
WAIT #2: nam='SQL*Net message from client' ela= 136063164 driver id=1650815232 #bytes=1 p3=0 obj#=-1 tim=1416390287004294
CLOSE #2:c=0,e=3,dep=0,type=3,tim=1416390287004441
=====================
PARSING IN CURSOR #5 len=19 dep=0 uid=90 oct=47 lid=90 tim=1416390287005001 hv=3805855218 ad='87972f88' sqlid='1w9223jdjggk'
BEGIN :a:=2; END;
END OF STMT
PARSE #5:c=0,e=467,p=0,cr=0,cu=0,mis=1,r=0,dep=0,og=1,plh=0,tim=1416390287005001
BINDS #5:
Bind#0
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=03 fl2=1000000 frm=00 csi=00 siz=24 off=0
kxsbbbfp=7fd108695a28 bln=22 avl=00 flg=05
WAIT #5: nam='SQL*Net message to client' ela= 2 driver id=1650815232 #bytes=1 p3=0 obj#=-1 tim=1416390287006240
EXEC #5:c=1999,e=1191,p=0,cr=0,cu=0,mis=1,r=1,dep=0,og=1,plh=0,tim=1416390287006261

*** 2014-11-19 04:56:00.212
WAIT #5: nam='SQL*Net message from client' ela= 673206425 driver id=1650815232 #bytes=1 p3=0 obj#=-1 tim=1416390960212735
CLOSE #5:c=0,e=49,dep=0,type=0,tim=1416390960212948
=====================
PARSING IN CURSOR #1 len=51 dep=0 uid=90 oct=3 lid=90 tim=1416390960213839 hv=3085049059 ad='87973410' sqlid='214vxnyvy4773'
select count(*) from dba_objects where object_id=:a
END OF STMT
PARSE #1:c=1000,e=844,p=0,cr=0,cu=0,mis=1,r=0,dep=0,og=1,plh=0,tim=1416390960213838
=====================
PARSING IN CURSOR #6 len=37 dep=1 uid=0 oct=3 lid=0 tim=1416390960214450 hv=1398610540 ad='9a8c2c00' sqlid='grwydz59pu6mc'
select text from view$ where rowid=:1
END OF STMT
PARSE #6:c=1000,e=408,p=0,cr=0,cu=0,mis=1,r=0,dep=1,og=4,plh=0,tim=1416390960214449
=====================
PARSING IN CURSOR #2 len=210 dep=2 uid=0 oct=3 lid=0 tim=1416390960215089 hv=864012087 ad='8a7b0300' sqlid='96g93hntrzjtr'
select /*+ rule */ bucket_cnt, row_cnt, cache_cnt, null_cnt, timestamp#, sample_size, minimum, maximum, distcnt, lowval, hival, density, col#, spare1, spare2, avgcln from hist_head$ where obj#=:1 and intcol#=:2
END OF STMT
PARSE #2:c=0,e=292,p=0,cr=0,cu=0,mis=1,r=0,dep=2,og=3,plh=0,tim=1416390960215089
BINDS #2:
Bind#0
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
kxsbbbfp=7fd108751d48 bln=22 avl=02 flg=05
value=69
Bind#1
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
kxsbbbfp=7fd108751d18 bln=24 avl=03 flg=05
value=1001
EXEC #2:c=1000,e=9315,p=0,cr=0,cu=0,mis=1,r=0,dep=2,og=3,plh=2239883476,tim=1416390960224458
FETCH #2:c=0,e=28,p=0,cr=2,cu=0,mis=0,r=0,dep=2,og=3,plh=2239883476,tim=1416390960224573
STAT #2 id=1 cnt=0 pid=0 pos=1 obj=424 op='TABLE ACCESS BY INDEX ROWID HIST_HEAD$ (cr=2 pr=0 pw=0 time=0 us)'
STAT #2 id=2 cnt=0 pid=1 pos=1 obj=426 op='INDEX RANGE SCAN I_HH_OBJ#_INTCOL# (cr=2 pr=0 pw=0 time=0 us)'
CLOSE #2:c=0,e=2,dep=2,type=3,tim=1416390960224765
=====================
PARSING IN CURSOR #5 len=210 dep=2 uid=0 oct=3 lid=0 tim=1416390960224900 hv=864012087 ad='8a7b0300' sqlid='96g93hntrzjtr'
select /*+ rule */ bucket_cnt, row_cnt, cache_cnt, null_cnt, timestamp#, sample_size, minimum, maximum, distcnt, lowval, hival, density, col#, spare1, spare2, avgcln from hist_head$ where obj#=:1 and intcol#=:2
END OF STMT
BINDS #5:
Bind#0
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
kxsbbbfp=7fd108751d48 bln=22 avl=02 flg=05
value=69
Bind#1
oacdty=02 mxl=22(22) mxlc=00 mal=00 scl=00 pre=00
oacflg=08 fl2=0001 frm=00 csi=00 siz=24 off=0
kxsbbbfp=7fd108751d18 bln=24 avl=02 flg=05
value=8
EXEC #5:c=0,e=132,p=0,cr=0,cu=0,mis=0,r=0,dep=2,og=3,plh=2239883476,tim=1416390960225016
FETCH #5:c=0,e=12,p=0,cr=2,cu=0,mis=0,r=0,dep=2,og=3,plh=2239883476,tim=1416390960225045
CLOSE #5:c=0,e=1,dep=2,type=3,tim=1416390960225068
BINDS #6:
Bind#0
oacdty=11 mxl=16(16) mxlc=00 mal=00 scl=00 pre=00
oacflg=18 fl2=0001 frm=00 csi=00 siz=16 off=0
kxsbbbfp=7fd1086aa078 bln=16 avl=16 flg=05

。。。。。省略大量输出

"~/app/diag/rdbms/orcl/orcl/trace/orcl_ora_2823.trc" 148L, 8943C

8.2 使用tkprof工具查看10046时间的trace文件
[oracle@11g ~]$ tkprof /home/oracle/app/diag/rdbms/orcl/orcl/trace/orcl_ora_2823.trc andy.txt sys=no

TKPROF: Release 11.2.0.1.0 - Development on Wed Nov 19 05:00:35 2014

[oracle@11g ~]$ vi andy.txt

from
dba_objects where object_id=:a

call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 2 0.00 0.00 0 5 0 1
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 4 0.01 0.00 0 5 0 1

Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 90

Rows Row Source Operation # 执行计划
------- ---------------------------------------------------
1 SORT AGGREGATE (cr=5 pr=0 pw=0 time=0 us)
1 VIEW DBA_OBJECTS (cr=5 pr=0 pw=0 time=0 us cost=5 size=26 card=2)
1 UNION-ALL (cr=5 pr=0 pw=0 time=0 us)
1 FILTER (cr=5 pr=0 pw=0 time=0 us)
1 NESTED LOOPS (cr=5 pr=0 pw=0 time=0 us cost=5 size=71 card=1)
1 NESTED LOOPS (cr=4 pr=0 pw=0 time=0 us cost=4 size=67 card=1)
1 TABLE ACCESS BY INDEX ROWID OBJ$ (cr=3 pr=0 pw=0 time=0 us cost=3 size=45 card=1)
1 INDEX RANGE SCAN I_OBJ1 (cr=2 pr=0 pw=0 time=0 us cost=2 size=0 card=1)(object id 36)
1 INDEX RANGE SCAN I_USER2 (cr=1 pr=0 pw=0 time=0 us cost=1 size=22 card=1)(object id 47)
1 INDEX RANGE SCAN I_USER2 (cr=1 pr=0 pw=0 time=0 us cost=1 size=4 card=1)(object id 47)
0 TABLE ACCESS BY INDEX ROWID IND$ (cr=0 pr=0 pw=0 time=0 us cost=2 size=8 card=1)
0 INDEX UNIQUE SCAN I_IND1 (cr=0 pr=0 pw=0 time=0 us cost=1 size=0 card=1)(object id 41)
0 NESTED LOOPS (cr=0 pr=0 pw=0 time=0 us cost=2 size=29 card=1)
0 INDEX FULL SCAN I_USER2 (cr=0 pr=0 pw=0 time=0 us cost=1 size=20 card=1)(object id 47)
0 INDEX RANGE SCAN I_OBJ4 (cr=0 pr=0 pw=0 time=0 us cost=1 size=9 card=1)(object id 39)

————————————————————————————————————————————————————

二：跟踪指定会话（具体步骤参上面部分，这里简写）

使用10046 事件跟踪启动trace
SQL> exec dbms_monitor.session_trace_enable(45,14,waits=>true,binds=>true)

PL/SQL procedure successfully completed.

关闭trace
SQL> exec dbms_monitor.session_trace_disable(45,14);

PL/SQL procedure successfully completed.

OK，结束。转载请标明出处。

10046事件跟踪会话sql的更多相关文章

SQL Tuning 基础概述03 - 使用sql_trace和10046事件跟踪执行计划
1.使用sql_trace跟踪执行计划 1.1 当前session跟踪: alter session set sql_trace = true; //开始sql_trace alter session ...
Oracle SQL Trace 和 10046 事件
http://blog.csdn.net/tianlesoftware/article/details/5857023 一. SQL_TRACE 当SQL语句出现性能问题时,我们可以用SQL_TRAC ...
10046事件sql_trace跟踪
查看 sql 执行计划的方法有许多种, 10046 事件就是其中的一种. 与其他查看 sql 执行计划不同, 当我们遇到比较复杂的 sql 语句, 我们可以通过 10046 跟踪 sql 得到执行计划 ...
Oracle 课程八之性能优化之10046事件
Oracle 的事件很多. 具体参考blog: Oracle 跟踪事件 set event 转摘:http://blog.csdn.net/tianlesoftware/archive/2009/12 ...
SQL Server扩展事件-- 使用system_health默认跟踪会话监控死锁
SQL Server扩展事件(Extended Events)-- 使用system_health默认跟踪会话监控死锁转自:http://blog.51cto.com/ultrasql/160037 ...
Oracle执行语句跟踪(2)——使用10046事件实现语句追踪
接上篇博文Oracle执行语句跟踪(1)--使用sql trace实现语句追踪,一旦我们通过会话追踪获取到超时事物的执行语句,就可以使用10046事件对语句进行追踪. 启用10046事件追踪的方式 S ...
深入理解Oracle调试事件：10046事件详解
10046事件是SQL_TRACE的扩展,被戏称为"吃了兴奋剂的SQL_TRACE" 有效的追踪级别: ① 0级:SQL_TRACE=FASL ...
【转】SQL Server 2008 事件探查器(SQL SERVER Profiler)
跟踪数据库sql语句的执行情况.例:一个系统,用到了sql server 数据库,这个系统共有500张表,当用户在前台页面做某一个操作时,比如插入,登录等等,我们想知道此刻是在对哪一张表操作,打开事件 ...
[转].NET 性能测试工具 -- 事件跟踪器（ETW）
.NET 性能测试工具 -- 事件跟踪器(ETW) 内容预告: Windows内置工具(性能计数器) 事件跟踪器(WPT,PerfMoniter,PerfView,自定义ETW) 时间分析内存分配分 ...

随机推荐

iOS NSDictionary、NSData、JSON数据类型相互转换
iOS经常需要用到数据类型的转换,下面列举一下常用类型的转换. 1.NSDictionary类型转换为NSData类型: //NSDictionary -> NSData: NSDictiona ...
hdu 1069
//Accepted 264 KB 0 ms //每种block只有三种方法,且每种放法至多放一次 //规定三条边的顺序后 //把所有的block按x递增排序,x相同则按y递增排序 //然后dp // ...
uart与usart
字面意义:UART:universal asynchronous receiver and transmitter通用异步收发器:USART:universal synchronous asynchr ...
javascript正则表达式替换字符串
var reg = /^per_list(.*)[\d]{1,}(.*)/;var str = "per_listAmtApril1.value";var replaceStr = ...
强引用strong和弱引用weak的定义
1.强引用表示从属关系,引用对象拥有被引用的对象.弱引用则暗示引用对象不拥有被引用的对象.一个对象的寿命是由它被强引用多少次来决定的.只要对象还存在强引用,就不会释放该对象. 注意:但是对象之间的引用 ...
BZOJ 2241 打地鼠
暴力. 这怎么这么快.... #include<iostream> #include<cstdio> #include<cstring> #include<a ...
【Tsinghua OJ】隧道(Tunel)问题
描述现有一条单向单车道隧道,每一辆车从隧道的一端驶入,另一端驶出,不允许超车该隧道对车辆的高度有一定限制,在任意时刻,管理员希望知道此时隧道中最高车辆的高度是多少现在请你维护这条隧道的车辆进出记 ...
jQuery基础学习笔记（1）
--------2.0以上版本体积更小. --------CDN 内容分发网络(Content delivery network或Content distribution network,常简写成C ...
windows服务创建与管理
安装windows 服务 C:\Users\chensimin>cd \ C:\>cd C:\Windows\Microsoft.NET\Framework\v4.0.30319 C:\W ...
【题解】【BST】【Leetcode】Convert Sorted Array to Binary Search Tree
Given an array where elements are sorted in ascending order, convert it to a height balanced BST.思路: ...

10046事件跟踪会话sql

10046事件跟踪会话sql的更多相关文章

随机推荐

热门专题