可以应用在下面的环境下:
任意操作系统平台下
Oracle Server - Enterprise Edition - Version: 8.1.7.4 to 10.2.0.0
目标:
获得imp/exp会话sql的trace文件
方法:
有4种方法可以获得imp/exp会话sql的trace文件.
1.在系统级别设置10046事件.
alter system set events '10046 trace name context forever, level 12';
2.使用dbms_system.set_sql_trace_in_session
用下面的查询从v$session获得sid,serail#,program:
select sid,serial#,program from v$session where program like '%exp% or %imp%;
execute dbms_system.set_sql_trace_in_session(sid,serial#,True);
这里的sid和serial#是从前面的查询中得到的
3.使用oradebug:
select s.sid, p.pid, p.spid from v$session s, v$process p where s.paddr = p.addr and s.sid = [X];
spid指示了exp/imp进程在操作系统中的pid.
使用SYS(internal或AS SYSDBA)身份来连接数据库
oradebug setospid [X]
设置spid
oradebug event 10046 trace name context forever, level 12
打开跟踪
4.选项trace=y
在exp/imp中设置trace=y,可以激活sql_trace和timed_statistics.
这个特性在8.1.6版本之后才可用.
缺省情况下,trace选项为no.
这是最简单的获得imp/exp会话sql的trace文件的方法.
exp 'a1/a1' file=expa1.dmp log=expa1.log trace=y
这个exp会话会在user_dump_dest的目录中产生10046的trace文件.
导入也一样:
imp system/ fromuser=a1 touser=b1 file=expa1.dmp log=impb1.log trace=y
这个imp会话会在user_dump_dest的目录中产生10046的trace文件.
实验:
1、测试开始，窗口1
oracle@yang:~> sqlplus hr/hr
SQL*Plus: Release 9.2.0.4.0 - Production on Fri Apr 21 18:11:42 2006
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production
窗口2
oracle@yang:~> sqlplus '/ as sysdba'
SQL*Plus: Release 9.2.0.4.0 - Production on Fri Apr 21 18:19:13 2006
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data Mining options
JServer Release 9.2.0.4.0 - Production
SQL> show user
USER is "SYS"
2、查找spid并没置event
SQL> select pid,spid from v$process where addr in (select paddr from v$session where username='HR');
PID SPID
---------- ------------
15 8882
SQL> oradebug setospid 8882
Oracle pid: 15, Unix process pid: 8882, image: oracle@yang (TNS V1-V3)
SQL> oradebug event 10046 trace name context forever,level 12
Statement processed.
SQL> oradebug tracefile_name
Statement processed.
--因hr用户窗口没执行sql，故trace文件还未生成 |
