10046 事件跟踪

10046事件是oracle提供的内部跟踪事件，是对SQL_TRACE的曾强，提供10046可以通知oracle内核开启SQL_TRACE类的跟踪。使用步骤如下：

1.开启跟踪：SQL> alter session set events ‘10046 trace name context forever , level 12’;

2.执行跟踪内容：SQL> select * from workitem t where rownum<5;

3.停止跟踪：SQL> alter session set events ‘10046 trace name context off’;

4.tkprof格式化：切换到跟踪日志文件所在路径下，通过tkprof格式化
C:\Users\WXH-NOTE>f:

F:\>cd f:\app\wxh-note\diag\rdbms\orcl\orcl\trace
f:\app\WXH-NOTE\diag\rdbms\orcl\orcl\trace>tkprof orcl_ora_16184.trc trace.txt print=100 record=sql.txt sys=no

5.分析跟踪日志

TKPROF: Release 11.2.0.1.0 - Development on 星期四 2月 16 19:26:06 2017

Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.

Trace file: orcl_ora_16184.trc

Sort options: default

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

count    = number of times OCI procedure was executed

cpu      = cpu time in seconds executing 

elapsed  = elapsed time in seconds executing

disk     = number of physical reads of buffers from disk

query    = number of buffers gotten for consistent read

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

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

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

OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS

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        0      0.00       0.00          0          0          0           0

------- ------  -------- ---------- ---------- ---------- ----------  ----------

total        2      0.00       0.00          0          0          0           0

Misses in library cache during parse: 0

Elapsed times include waiting on following events:

  Event waited on                             Times   Max. Wait  Total Waited

  ----------------------------------------   Waited  ----------  ------------

  SQL*Net message to client                       1        0.00          0.00

  SQL*Net message from client                     1       40.18         40.18

OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS

call     count       cpu    elapsed       disk      query    current        rows

------- ------  -------- ---------- ---------- ---------- ----------  ----------

Parse        0      0.00       0.00          0          0          0           0

Execute      0      0.00       0.00          0          0          0           0

Fetch        0      0.00       0.00          0          0          0           0

------- ------  -------- ---------- ---------- ---------- ----------  ----------

total        0      0.00       0.00          0          0          0           0

Misses in library cache during parse: 0

    1  user  SQL statements in session.

    0  internal SQL statements in session.

    1  SQL statements in session.

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

Trace file: orcl_ora_16184.trc

Trace file compatibility: 11.1.0.7

Sort options: default

       1  session in tracefile.

       1  user  SQL statements in trace file.

       0  internal SQL statements in trace file.

       1  SQL statements in trace file.

       1  unique SQL statements in trace file.

      31  lines in trace file.

       0  elapsed seconds in trace file.