Audit package : Utility Package « Function Procedure Packages « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. Function Procedure Packages
3. Utility Package

SQL>
SQL> create table audit_trail
  2  ( username  varchar2(30),
  3    pk        number,
  4    attribute varchar2(30),
  5    dataum    varchar2(255),
  6    timestamp date
  7  )
  8  /

Table created.

SQL>
SQL>
SQL> create or replace package audit_trail_pkg
  2  as
  3      function record( p_pk in number,
  4                       p_attr in varchar2,
  5                       p_dataum in number ) return number;
  6      function record( p_pk in number,
  7                       p_attr in varchar2,
  8                       p_dataum in varchar2 ) return varchar2;
  9      function record( p_pk in number,
 10                       p_attr in varchar2,
 11                       p_dataum in date ) return date;
 12  end;
 13  /

Package created.

SQL>
SQL> create or replace package body audit_trail_pkg
  2  as
  3
  4  procedure log( p_pk in number,
  5                 p_attr in varchar2,
  6                 p_dataum in varchar2 )
  7  as
  8      pragma autonomous_transaction;
  9  begin
 10      insert into audit_trail values
 11      ( user, p_pk, p_attr, p_dataum, sysdate );
 12      commit;
 13  end;
 14
 15  function record( p_pk in number,
 16                   p_attr in varchar2,
 17                   p_dataum in number ) return number
 18  is
 19  begin
 20      log( p_pk, p_attr, p_dataum );
 21      return p_dataum;
 22  end;
 23
 24  function record( p_pk in number,
 25                   p_attr in varchar2,
 26                   p_dataum in varchar2 ) return varchar2
 27  is
 28  begin
 29      log( p_pk, p_attr, p_dataum );
 30      return p_dataum;
 31  end;
 32
 33  function record( p_pk in number,
 34                   p_attr in varchar2,
 35                   p_dataum in date ) return date
 36  is
 37  begin
 38      log( p_pk, p_attr,
 39           to_char(p_dataum,'dd-mon-yyyy hh24:mi:ss') );
 40      return p_dataum;
 41  end;
 42
 43  end;
 44  /

Package body created.

SQL>
SQL>
SQL> CREATE TABLE EMP (EMPNO NUMBER(4) NOT NULL,
  2                    ENAME VARCHAR2(10),
  3                    JOB VARCHAR2(9),
  4                    MGR NUMBER(4),
  5                    HIREDATE DATE,
  6                    SAL NUMBER(7, 2),
  7                    COMM NUMBER(7, 2),
  8                    DEPTNO NUMBER(2));

Table created.

SQL>
SQL>
SQL> INSERT INTO EMP VALUES (7369, 'SMITH', 'CLERK',    7902, TO_DATE('17-DEC-1980', 'DD-MON-YYYY'), 800, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7499, 'ALLEN', 'SALESMAN', 7698, TO_DATE('20-FEB-1981', 'DD-MON-YYYY'), 1600, 300, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7521, 'WARD',  'SALESMAN', 7698, TO_DATE('22-FEB-1981', 'DD-MON-YYYY'), 1250, 500, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7566, 'JONES', 'MANAGER',  7839, TO_DATE('2-APR-1981',  'DD-MON-YYYY'), 2975, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7654, 'MARTIN', 'SALESMAN', 7698,TO_DATE('28-SEP-1981', 'DD-MON-YYYY'), 1250, 1400, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7698, 'BLAKE', 'MANAGER', 7839,TO_DATE('1-MAY-1981', 'DD-MON-YYYY'), 2850, NULL, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7782, 'CLARK', 'MANAGER', 7839,TO_DATE('9-JUN-1981', 'DD-MON-YYYY'), 2450, NULL, 10);

1 row created.

SQL> INSERT INTO EMP VALUES (7788, 'SCOTT', 'ANALYST', 7566,TO_DATE('09-DEC-1982', 'DD-MON-YYYY'), 3000, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7839, 'KING', 'PRESIDENT', NULL,TO_DATE('17-NOV-1981', 'DD-MON-YYYY'), 5000, NULL, 10);

1 row created.

SQL> INSERT INTO EMP VALUES (7844, 'TURNER', 'SALESMAN', 7698,TO_DATE('8-SEP-1981', 'DD-MON-YYYY'), 1500, 0, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7876, 'ADAMS', 'CLERK', 7788,TO_DATE('12-JAN-1983', 'DD-MON-YYYY'), 1100, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7900, 'JAMES', 'CLERK', 7698,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 950, NULL, 30);

1 row created.

SQL> INSERT INTO EMP VALUES (7902, 'FORD', 'ANALYST', 7566,TO_DATE('3-DEC-1981', 'DD-MON-YYYY'), 3000, NULL, 20);

1 row created.

SQL> INSERT INTO EMP VALUES (7934, 'MILLER', 'CLERK', 7782,TO_DATE('23-JAN-1982', 'DD-MON-YYYY'), 1300, NULL, 10);

1 row created.

SQL>
SQL>
SQL>
SQL> create or replace view emp_v
  2  as
  3  select empno , ename, job,mgr,
  4         audit_trail_pkg.record( empno, 'sal', sal ) sal,
  5         audit_trail_pkg.record( empno, 'comm', comm ) comm,
  6         audit_trail_pkg.record( empno, 'hiredate', hiredate ) hiredate,
  7         deptno
  8    from emp
  9  /

View created.

SQL> select empno, ename, hiredate, sal, comm, job from emp_v where ename = 'KING';

     EMPNO ENAME      HIREDATE         SAL       COMM JOB
---------- ---------- --------- ---------- ---------- ---------
      7839 KING       17-NOV-81       5000            PRESIDENT

SQL>
SQL> drop table audit_trail;

Table dropped.

SQL> drop table emp;

Table dropped.

SQL>
SQL>