1.并发程序定义界面，勾选启用跟踪选项；

2.提交该并发请求；

3.使用请求号查询生成的trace文件路径，生成的文件在数据库服务器上，需要用数据库服务器账号登录；

路径使用以下sql查询，对应trace1和trace2字段，我所在的项目DEV环境的trace取自trace2：

SELECT 'Request id: ' || request_id,

   'Trace id: ' || oracle_process_id,

   'Trace Flag: ' || req.enable_trace,

   'Trace Name: ' || dest.value || '/' || lower(dbnm.value) || '_ora_' ||

   oracle_process_id || '.trc' "trace_1",

   'Trace Name: ' || dest.value || '/' || dbnm.value || '_ora_' ||

   oracle_process_id || '_SYSADMIN_CR' || req.request_id || '.trc' "trace_2",

   --'Prog. Name: '||prog.user_concurrent_program_name,

   'File Name: ' || execname.execution_file_name ||

   execname.subroutine_name,

   'Status : ' || decode(phase_code, 'R', 'Running') || '-' ||

   decode(status_code, 'R', 'Normal'),

   'SID Serial: ' || ses.sid || ',' || ses.serial#,

   'Module : ' || ses.module

FROM apps.fnd_concurrent_requests req,

   v$session                       ses,

   v$process                       proc,

   v$parameter                     dest,

   v$parameter                     dbnm,

   apps.fnd_concurrent_programs_vl prog,

   apps.fnd_executables            execname

WHERE req.request_id = 12560569

AND req.oracle_process_id = proc.spid(+)

AND proc.addr = ses.paddr(+)

AND dest.name = 'user_dump_dest'

AND dbnm.name = 'db_name'

AND req.concurrent_program_id = prog.concurrent_program_id

AND req.program_application_id = prog.application_id

AND prog.application_id = execname.application_id

AND prog.executable_id = execname.executable_id;

4.将trace文件下载到本地，在trace文件本地路径上，shif+右键，打开命令窗口

使用tkprof命令解析trc文件为更易读懂的txt文件。

tkprof XXX.trc output= XXX.txt

当然也可以在trc文件和txt文件名前面加上路径

tkprof f:\oracle\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_1160.trc output=c:\aa.txt

5.打开生成的txt文件，建议使用EditPlus打开，更好读一些；

trace文件主要的参数：

---

count = number of times OCI procedure wasexecuted

cpu = cpu time in secondsexecuting ，cpu执行使用的时间

elapsed = elapsed time in secondsexecuting，整个sql执行的时间，包括cpu时间

disk = number of physical reads of buffers fromdisk

query = number of buffers gotten for consistentread

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

rows = number of rowsprocessed by the fetch or execute call，返回的行数

---

查找txt文件里面的call count cpu elapsed disk query current rows参数，

主要查找cpu和elapsed时间最大的sql，查看其执行计划并对其进行分析优化；