How to check the performance of query via the command sqlplus prompt

Hello

I work in the production environment, I want to check the performance of the queries in a production environment, we have no specific tools such as the expliin plan, TK Proff.

I need chek performnce of sqlplus command line query

Please let me know the process of query tuning of sqlplus command promt

Here to explain plan:

SQL> explain plan for
  2  select * from employees where employee_id = 170;

Explained.

SQL> select * from table(dbms_xplan.display());

PLAN_TABLE_OUTPUT
-----------------------------------------------------------------------------------------------
Plan hash value: 1833546154

---------------------------------------------------------------------------------------------
| Id  | Operation                   | Name          | Rows  | Bytes | Cost (%CPU)| Time     |
---------------------------------------------------------------------------------------------
|   0 | SELECT STATEMENT            |               |     1 |    69 |     1   (0)| 00:00:01 |
|   1 |  TABLE ACCESS BY INDEX ROWID| EMPLOYEES     |     1 |    69 |     1   (0)| 00:00:01 |
|*  2 |   INDEX UNIQUE SCAN         | EMP_EMP_ID_PK |     1 |       |     0   (0)| 00:00:01 |
---------------------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   2 - access("EMPLOYEE_ID"=170)

You can also use autotrace, which is super easy:

SQL> set autotrace on
SQL> select * from emp;

               EMPNO ENAME      JOB                        MGR HIREDATE
-------------------- ---------- --------- -------------------- --------------------
                7369 SMITH      CLERK                     7902 17-DEC-1980 00:00:00
                7499 ALLEN      SALESMAN                  7698 20-FEB-1981 00:00:00
                7521 WARD       SALESMAN                  7698 22-FEB-1981 00:00:00
                7566 JONES      MANAGER                   7839 02-APR-1981 00:00:00
                7654 MARTIN     SALESMAN                  7698 28-SEP-1981 00:00:00
                7698 BLAKE      MANAGER                   7839 01-MAY-1981 00:00:00
                7782 CLARK      MANAGER                   7839 09-JUN-1981 00:00:00
                7788 SCOTT      ANALYST                   7566 19-APR-1987 00:00:00
                7839 KING       PRESIDENT                      17-NOV-1981 00:00:00
                7844 TURNER     SALESMAN                  7698 08-SEP-1981 00:00:00
                7876 ADAMS      CLERK                     7788 23-MAY-1987 00:00:00
                7900 JAMES      CLERK                     7698 03-DEC-1981 00:00:00
                7902 FORD       ANALYST                   7566 03-DEC-1981 00:00:00
                7934 MILLER     CLERK                     7782 23-JAN-1982 00:00:00

14 rows selected.

Execution Plan
----------------------------------------------------------
Plan hash value: 3956160932

--------------------------------------------------------------------------
| Id  | Operation         | Name | Rows  | Bytes | Cost (%CPU)| Time     |
--------------------------------------------------------------------------
|   0 | SELECT STATEMENT  |      |    14 |   532 |     3   (0)| 00:00:01 |
|   1 |  TABLE ACCESS FULL| EMP  |    14 |   532 |     3   (0)| 00:00:01 |
--------------------------------------------------------------------------

Statistics
----------------------------------------------------------
        480  recursive calls
          0  db block gets
         92  consistent gets
          9  physical reads
          0  redo size
       1630  bytes sent via SQL*Net to client
        520  bytes received via SQL*Net from client
          2  SQL*Net roundtrips to/from client
          7  sorts (memory)
          0  sorts (disk)
         14  rows processed

This guide has lots of good info:
http://docs.Oracle.com/CD/B19306_01/server.102/b14211/TOC.htm

Tags: Database

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