Transaction Oracle PLSQL Tutorial

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> 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> CREATE TABLE query_trace (
  2     table_name VARCHAR2(30),
  3     rowid_info ROWID,
  4     queried_by VARCHAR2(30),
  5     queried_at DATE
  6     );
Table created.
SQL>
SQL> CREATE OR REPLACE FUNCTION traceit (
  2     tab IN VARCHAR2,
  3     rowid_in IN ROWID)
  4     RETURN INTEGER
  5  IS
  6     PRAGMA AUTONOMOUS_TRANSACTION;
  7  BEGIN
  8     INSERT INTO query_trace VALUES (tab, rowid_in, USER, SYSDATE);
  9     COMMIT;
 10     RETURN 0;
 11  END;
 12  /
Function created.
SQL>
SQL> SELECT ename, traceit ('emp', ROWID)
  2    FROM emp;
ENAME      TRACEIT('EMP',ROWID)
---------- --------------------
SMITH                         0
ALLEN                         0
WARD                          0
JONES                         0
MARTIN                        0
BLAKE                         0
CLARK                         0
SCOTT                         0
KING                          0
TURNER                        0
ADAMS                         0
JAMES                         0
FORD                          0
MILLER                        0
14 rows selected.
SQL>
SQL> SELECT table_name, rowid_info, queried_by,
  2         TO_CHAR (queried_at, 'HH:MI:SS') queried_at
  3    FROM query_trace;
TABLE_NAME                     ROWID_INFO         QUERIED_BY                     QUERIED_
------------------------------ ------------------ ------------------------------ --------
emp                            AAAE5nAABAAAKXqAAA RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAB RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAC RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAD RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAE RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAF RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAG RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAH RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAI RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAJ RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAK RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAL RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAM RNTSOFT                         08:08:36
emp                            AAAE5nAABAAAKXqAAN RNTSOFT                         08:08:36
14 rows selected.
SQL>
SQL> DROP TABLE query_trace;
Table dropped.
SQL> drop table emp;
Table dropped.
SQL>