http://www.orafaq.com/forum/t/60746/2/
TKPROF: Release 9.2.0.1.0 - Production on Thu Mar 23 23:33:37 2006
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Trace file: op_ora_2660.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 goal: CHOOSE
Parsing user id: 44
********************************************************************************
declare
varA VARCHAR2(10) := 'x';
varB VARCHAR2(10);
begin
EXECUTE IMMEDIATE
' SELECT nvl2( :varA,''str'',''pqr'') FROM dual ' INTO varB USING varA;
dbms_output.put_line(' varB = ' || varB );
end;
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 1
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 1
Misses in library cache during parse: 0
Optimizer goal: CHOOSE
Parsing user id: 44
********************************************************************************
select user#
from
sys.user$ where name = 'OUTLN'
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 1 0.00 0.00 0 2 0 1
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 3 0.00 0.00 0 2 0 1
Misses in library cache during parse: 0
Optimizer goal: CHOOSE
Parsing user id: SYS (recursive depth: 2)
Rows Row Source Operation
------- ---------------------------------------------------
1 TABLE ACCESS BY INDEX ROWID USER$
1 INDEX UNIQUE SCAN I_USER1 (object id 44)
********************************************************************************
SELECT nvl2( :varA,'str','pqr')
FROM
dual
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 1 0.01 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1 0.00 0.00 0 3 0 1
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 3 0.01 0.00 0 3 0 1
Misses in library cache during parse: 0
Optimizer goal: CHOOSE
Parsing user id: 44 (recursive depth: 1)
Rows Row Source Operation
------- ---------------------------------------------------
1 TABLE ACCESS FULL DUAL
********************************************************************************
declare
varA VARCHAR2(10) := 'x';
varB VARCHAR2(10);
begin
select varA into varB from dual;
if varA is null
then
varb := 'pqr';
else
varb := 'str';
end if;
end;
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 1
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 2 0.00 0.00 0 0 0 1
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: 44
********************************************************************************
SELECT :b1
from
dual
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 1 0.00 0.00 0 3 0 1
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 3 0.00 0.00 0 3 0 1
Misses in library cache during parse: 1
Optimizer goal: CHOOSE
Parsing user id: 44 (recursive depth: 1)
Rows Row Source Operation
------- ---------------------------------------------------
1 TABLE ACCESS FULL DUAL
********************************************************************************
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 2 0.00 0.00 0 0 0 0
Execute 3 0.00 0.00 0 0 0 2
Fetch 0 0.00 0.00 0 0 0 0
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 5 0.00 0.00 0 0 0 2
Misses in library cache during parse: 1
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
------- ------ -------- ---------- ---------- ---------- ---------- ----------
Parse 3 0.01 0.00 0 0 0 0
Execute 3 0.00 0.00 0 0 0 0
Fetch 3 0.00 0.00 0 8 0 3
------- ------ -------- ---------- ---------- ---------- ---------- ----------
total 9 0.01 0.00 0 8 0 3
Misses in library cache during parse: 1
5 user SQL statements in session.
1 internal SQL statements in session.
6 SQL statements in session.
********************************************************************************
Trace file: op_ora_2660.trc
Trace file compatibility: 9.00.01
Sort options: default
1 session in tracefile.
5 user SQL statements in trace file.
1 internal SQL statements in trace file.
6 SQL statements in trace file.
6 unique SQL statements in trace file.
83 lines in trace file.
文章定位：
