How to understand trace result

From: Eriovaldo Andrietta <ecandrietta_at_gmail.com>
Date: Sat, 10 Jan 2009 12:21:01 -0200
Message-ID: <90b7e6bd0901100621t65e94533q7f2be706a30b1267_at_mail.gmail.com>

Hi friends

I am getting some trace files to analyze and I would like to understande what means each number below.
Could someone give me some explanation.
These numbers are result of getting session trace for around 5 minutes only. Regards
Eriovaldo

---

OVERALL TOTALS FOR ALL NON-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

OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ----------

---

Parse   280247      7.17       6.92          0        736
6           0
Execute 838921     72.83      74.21        272      79225      10914
10758
Fetch   841865    619.19     629.54        136    7889481          1

842533
------- ------ -------- ---------- ---------- ---------- ----------

---

total 1961033 699.21 710.68 408 7969442 10921 853291

Misses in library cache during parse: 211 Misses in library cache during execute: 170

Elapsed times include waiting on following events:

  Event waited on                             Times   Max. Wait  Total

Waited

• Waited ----------

  ---

  db file sequential read 278 0.05 1.73 latch: library cache 15 0.00 0.00 latch: shared pool 10 0.00 0.00 undo segment extension 1 0.00 0.00 db file scattered read 10 0.02 0.09 log file sync 1 0.00 0.00 reliable message 3 0.00 0.00 rdbms ipc reply 3 0.01 0.02 enq: RO - fast object reuse 2 0.00 0.00 latch: row cache objects 1 0.00 0.00

279017 user SQL statements in session.  2835 internal SQL statements in session. 281852 SQL statements in session.

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http://www.freelists.org/webpage/oracle-l Received on Sat Jan 10 2009 - 08:21:01 CST