set autotrace on explain for every single statement

  


SQL> set autotrace on explain
SQL>
SQL> create table emp
  2  ( empno      NUMBER(4)    constraint E_PK          primary key
  3  , ename      VARCHAR2(8)
  4  , init       VARCHAR2(5)
  5  , job        VARCHAR2(8)
  6  , mgr        NUMBER(4)
  7  , bdate      DATE
  8  , sal        NUMBER(6,2)
  9  , comm       NUMBER(6,2)
 10  , deptno     NUMBER(2)    default 10
 11  ) ;

Table created.

SQL> insert into emp values(1,'Tom','N',   'Coder', 13,date '1965-12-17',  800 , NULL,  20);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(2,'Jack','JAM', 'Tester',6,date '1961-02-20',  1600, 300,   30);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(3,'Wil','TF' ,  'Tester',6,date '1962-02-22',  1250, 500,   30);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(4,'Jane','JM',  'Designer', 9,date '1967-04-02',  2975, NULL,  20);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(5,'Mary','P',  'Tester',6,date '1956-09-28',  1250, 1400,  30);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(6,'Black','R',   'Designer', 9,date '1963-11-01',  2850, NULL,  30);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(7,'Chris','AB',  'Designer', 9,date '1965-06-09',  2450, NULL,  10);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(8,'Smart','SCJ', 'Coder', 4,date '1959-11-26',  3000, NULL,  20);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(9,'Peter','CC',   'Designer',NULL,date '1952-11-17',  5000, NULL,  10);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(10,'Take','JJ', 'Tester',6,date '1968-09-28',  1500, 0,     30);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(11,'Ana','AA',  'Coder', 8,date '1966-12-30',  1100, NULL,  20);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(12,'Jane','R',   'Manager',   6,date '1969-12-03',  800 , NULL,  30);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(13,'Fake','MG',   'Coder', 4,date '1959-02-13',  3000, NULL,  20);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL> insert into emp values(14,'Mike','TJA','Manager',   7,date '1962-01-23',  1300, NULL,  10);

1 row created.


Execution Plan
----------------------------------------------------------

---------------------------------
| Id  | Operation        | Name |
---------------------------------
|   0 | INSERT STATEMENT |      |
---------------------------------

Note
-----
   - rule based optimizer used (consider using cbo)

SQL>
SQL> set autotrace on
SQL>
SQL> select ename from emp where empno < 7500;

ENAME
--------
Tom
Jack
Wil
Jane
Mary
Black
Chris
Smart
Peter
Take
Ana
Jane
Fake
Mike

14 rows selected.


Execution Plan
----------------------------------------------------------
Plan hash value: 1482559701

--------------------------------------------
| Id  | Operation                   | Name |
--------------------------------------------
|   0 | SELECT STATEMENT            |      |
|   1 |  TABLE ACCESS BY INDEX ROWID| EMP  |
|*  2 |   INDEX RANGE SCAN          | E_PK |
--------------------------------------------

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

   2 - access("EMPNO"<7500)

Note
-----
   - rule based optimizer used (consider using cbo)


Statistics
----------------------------------------------------------
          1  recursive calls
          0  db block gets
          4  consistent gets
          0  physical reads
          0  redo size
        572  bytes sent via SQL*Net to client
        380  bytes received via SQL*Net from client
          2  SQL*Net roundtrips to/from client
          0  sorts (memory)
          0  sorts (disk)
         14  rows processed

SQL>
SQL> set autotrace off
SQL>
SQL> drop table emp;

Table dropped.

1.	autotrace command
2.	Autotrace on and off
3.	Autotrace lower text function
4.	Autotrace running total
5.	Autotrace a query on a huge table
6.	Autotrace a large table
7.	Autotrace a query with group clause
8.	Execution Plan
9.	autotrace a nested query
10.	set autotrace traceonly explain for bitmap index
11.	set autotrace traceonly explain, and condition
12.	set autotrace traceonly statistics
13.	set autotrace traceonly statistics for 'select * from tableName'
14.	set autotrace traceonly
15.	AUTOTRACE exists (subquery)
16.	AUTOTRACE table joining
17.	AUTOTRACE table joining and aggregate function
18.	autotrace ansi full outer join
19.	autotrace count(*)
20.	autotrace ctxsys.context index
21.	autotrace merge command
22.	autotrace table with/without an index

set autotrace on explain for every single statement : autotrace « SQL Plus « Oracle PL / SQL

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