ALTER SESSION SET SQL_TRACE = TRUE : Session variable « SQL Plus « Oracle PL / SQL

1. Oracle PL / SQL
2. SQL Plus
3. Session variable

ALTER SESSION SET SQL_TRACE = TRUE

    

SQL> CREATE TABLE emp (
  2    id         NUMBER PRIMARY KEY,
  3    fname VARCHAR2(50),
  4    lname  VARCHAR2(50)
  5  );

Table created.

SQL>
SQL> INSERT INTO emp (id, fname, lname)VALUES (1, 'A', 'B');

1 row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (2, 'C', 'D');

1 row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (3, 'Enn', 'F');

1 row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (4, 'G', 'H');

1 row created.

SQL> INSERT INTO emp (id, fname, lname)VALUES (5, 'G', 'Z');

1 row created.

SQL>
SQL>
SQL> ALTER SESSION SET SQL_TRACE = TRUE;

Session altered.

SQL> SELECT lname
  2  FROM emp
  3  WHERE fname = 'Mike';

no rows selected

SQL> ALTER SESSION SET SQL_TRACE = FALSE;

Session altered.

SQL>
SQL> drop table emp;

Table dropped.

   
    
    
    
  

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