How to see the wait events info. after excute a select query

Question

Hi
How to see the wait events info. after execute a select query. Are there any parameter to set for this option?
And also wanna see the follwing info. in trace file. For this what are the parameters I have to set right?
SELECT * FROM emp, dept
WHERE emp.deptno = dept.deptno;
call   count      cpu    elapsed     disk    query current    rows
Parse      1     0.16      0.29         3       13       0       0
Execute    1     0.00      0.00         0        0       0       0
Fetch      1     0.03      0.26         2        2       4      14
Misses in library cache during parse: 1
Parsing user id: (8) SCOTT Regards
Arpitha

Answer 1

$ sqlplus scott/tiger
SQL*Plus: Release 10.2.0.2.0 - Production on Wed Apr 20 15:29:33 2011
Copyright (c) 1982, 2005, Oracle.  All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
SQL> SHOW PARAMETER dump
NAME                                 TYPE        VALUE
background_core_dump                 string      partial
background_dump_dest                 string      /user/oracle/app/oracle/admin/
                                                 orclsb/bdump
core_dump_dest                       string      /user/oracle/app/oracle/admin/
                                                 orclsb/cdump
max_dump_file_size                   string      UNLIMITED
shadow_core_dump                     string      partial
user_dump_dest                       string      /user/oracle/app/oracle/admin/
                                                 orclsb/udump
SQL> ALTER SESSION SET EVENTS='10046 trace name context forever, level 12';
Session altered.
SQL> SELECT * FROM emp WHERE deptno=20;
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM
    DEPTNO
      7369 SMITH      CLERK           7902 17-DEC-80        800
        20
      7566 JONES      MANAGER         7839 02-APR-81       2975
        20
      7788 SCOTT      ANALYST         7566 19-APR-87       3000
        20
     EMPNO ENAME      JOB              MGR HIREDATE         SAL       COMM
    DEPTNO
      7876 ADAMS      CLERK           7788 23-MAY-87       1100
        20
      7902 FORD       ANALYST         7566 03-DEC-81       3000
        20Now
$ pwd
/user/oracle/app/oracle/admin/orclsb/udump
$ ls -ltr|tail -5
-rw-r-----   1 oracle   oinstall     622 Apr 20 11:35 orclsb_ora_949.trc
-rw-r-----   1 oracle   oinstall     651 Apr 20 11:35 orclsb_ora_976.trc
-rw-r-----   1 oracle   oinstall    1982 Apr 20 11:35 orclsb_ora_977.trc
-rw-r-----   1 oracle   oinstall    1443 Apr 20 15:29 orclsb_ora_1251.trc
-rw-r-----   1 oracle   oinstall  279719 Apr 20 15:30 orclsb_ora_1255.trc
$ tkprof  orclsb_ora_1255.trc  orclsb_ora_1255.txt
TKPROF: Release 10.2.0.2.0 - Production on Wed Apr 20 15:32:17 2011
Copyright (c) 1982, 2005, Oracle.  All rights reserved.
$ ls -ltr|tail -5
-rw-r-----   1 oracle   oinstall     651 Apr 20 11:35 orclsb_ora_976.trc
-rw-r-----   1 oracle   oinstall    1982 Apr 20 11:35 orclsb_ora_977.trc
-rw-r-----   1 oracle   oinstall    1443 Apr 20 15:29 orclsb_ora_1251.trc
-rw-r-----   1 oracle   oinstall  279719 Apr 20 15:30 orclsb_ora_1255.trc
-rw-r--r--   1 oracle   oinstall   26872 Apr 20 15:32 orclsb_ora_1255.txtThis orclsb_ora_1255.txt contains the required information.