Trigger parse in 10g

Question

Hi,
Some time ago I've read the sentence above,
"The SQL you code in packages and procedures will be cached for your entire session, thus reducing the number of parse calls. The SQL inside a trigger is cached only for the duration of the triggering statement, causing additional soft parses whenever the trigger is executed."
What I want to know is if the described trigger's behavior is valid for Enterprise Server 10g.
Thank you all in advance.
Best regards,
Carla Almeida

Answer 1

You can easy check it using Tom Kyte's example:
http://asktom.oracle.com/pls/ask/f?p=4950:8:::::F4950_P8_DISPLAYID:7507706875149
in 10G:
SQL> create table t ( x int );
&nbsp
Table created.
&nbsp
SQL> create or replace procedure p
  2  as
  3            l_cnt int;
  4  begin
  5           select count(*) into l_cnt from dual IN_PROCEDURE;
  6  end;
  7  /
&nbsp
Procedure created.
&nbsp
SQL> create or replace trigger t_trigger
  2  before insert on t for each row
  3  declare
  4            l_cnt number;
  5  begin
  6           select count(*) into l_cnt from dual IN_TRIGGER;
  7            p;
  8  end;
  9  /
&nbsp
Trigger created.
&nbsp
SQL> alter session set sql_trace=true;
&nbsp
Session altered.
&nbsp
SQL> insert into t values(1);
&nbsp
1 row created.
&nbsp
SQL> /
&nbsp
1 row created.
&nbsp
SQL> /
&nbsp
1 row created.
&nbsp
SQL> /
&nbsp
1 row created.
&nbsp
SQL> /
&nbsp
1 row created.
&nbsp
SQL> /
&nbsp
1 row created.
&nbsp
SQL> alter session set sql_trace=false;
&nbsp
Session altered.
&nbspAnd in trace file using tkprof we find:
SELECT COUNT(*)
FROM
DUAL IN_TRIGGER
&nbsp
&nbsp
call     count       cpu    elapsed       disk      query    current        rows
Parse        6      0.00       0.00          0          0          0           0
Execute      6      0.00       0.00          0          0          0           0
Fetch        6      0.00       0.00          0          0          0           6
total       18      0.00       0.00          0          0          0           6
&nbsp
SELECT COUNT(*)
FROM
DUAL IN_PROCEDURE
&nbsp
&nbsp
call     count       cpu    elapsed       disk      query    current        rows
Parse        1      0.00       0.00          0          0          0           0
Execute      6      0.00       0.00          0          0          0           0
Fetch        6      0.01       0.00          0          0          0           6
total       13      0.01       0.00          0          0          0           6Rgds.