tkprof用来使TRACE文件可读
会话1：
SQL> conn /as sysdba
Connected.
SQL> alter session set sql_trace=true;
Session altered.
SQL> select * from t;
X
----------
10001
SQL> update t t1 set x=x+1;
1 row updated.
SQL> update t t2 set x=x+1;
1 row updated.
会话2：格式化刚产生的TRACE文件。
[oracle@oraclelinux udump]$ rm -rf *
[oracle@oraclelinux udump]$ ll
total 8
-rw-r----- 1 oracle oinstall 2444 Apr 24 15:17 testenv01_ora_23302.trc
[oracle@oraclelinux udump]$ tkprof testenv01_ora_23302.trc tkprof1.txt
TKPROF: Release 10.2.0.1.0 - Production on Tue Apr 24 15:18:02 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
[oracle@oraclelinux udump]$ ll
total 20
-rw-r----- 1 oracle oinstall 2444 Apr 24 15:17 testenv01_ora_23302.trc
-rw-r--r-- 1 oracle oinstall 6237 Apr 24 15:18 tkprof1.txt
[oracle@oraclelinux udump]$ more tkprof1.txt
TKPROF: Release 10.2.0.1.0 - Production on Tue Apr 24 15:18:02 2012
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Trace file: testenv01_ora_23302.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
********************************************************************************
alter session set sql_trace=true
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 0 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 1 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: SYS
********************************************************************************
select *
from
t
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 3 0 1
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 4 0.00 0.00 0 3 0 1
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: SYS
Rows Row Source Operation
------- ---------------------------------------------------
1 TABLE ACCESS FULL T (cr=3 pr=0 pw=0 time=694 us)
********************************************************************************
update t t1 set x=x+1
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.02 0.02 0 0 0 0
Execute 1 0.00 0.00 0 3 3 1
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.02 0.02 0 3 3 1
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: SYS
Rows Row Source Operation
------- ---------------------------------------------------
0 UPDATE T (cr=3 pr=0 pw=0 time=3645 us)
1 TABLE ACCESS FULL T (cr=3 pr=0 pw=0 time=348 us)
********************************************************************************
update t t2 set x=x+1
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.01 0.01 0 0 0 0
Execute 1 0.00 0.00 0 3 1 1
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.01 0.01 0 3 1 1
Misses in library cache during parse: 1
Optimizer mode: ALL_ROWS
Parsing user id: SYS
Rows Row Source Operation
------- ---------------------------------------------------
0 UPDATE T (cr=3 pr=0 pw=0 time=1627 us)
1 TABLE ACCESS FULL T (cr=3 pr=0 pw=0 time=859 us)
********************************************************************************
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 3 0.03 0.03 0 0 0 0
Execute 4 0.00 0.00 0 6 4 2
Fetch 2 0.00 0.00 0 3 0 1
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 9 0.04 0.04 0 9 4 3
Misses in library cache during parse: 2
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
4 user SQL statements in session.
0 internal SQL statements in session.
4 SQL statements in session.
********************************************************************************
Trace file: testenv01_ora_23302.trc
Trace file compatibility: 10.01.00
Sort options: default
1 session in tracefile.
4 user SQL statements in trace file.
0 internal SQL statements in trace file.
4 SQL statements in trace file.
4 unique SQL statements in trace file.
49 lines in trace file.
29 elapsed seconds in trace file.
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