sql>select username from dba_users;
USERNAME
------------------------------
SYS
SYSTEM
DBSNMP
OUTLN
SCOTT
A1
6 rows selected.
sql>conn a1/a1
Connected.
sql>select * from tab;
TNAME TABTYPE CLUSTERID
--------------------------- ------- ---------
BONUS TABLE
DEPT TABLE
EMP TABLE
SALGRADE TABLE
sql>select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---- ------ ----- ---- --------- -------- -------- --------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN ALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
14 rows selected.
sql>conn /as sysdba
Connected.
sql>grant execute on dbms_flashback to a1;
Grant succeeded.
sql>conn a1/a1
Connected.
sql>select dbms_flashback.get_system_change_number from dual;
GET_SYSTEM_CHANGE_NUMBER
------------------------
122593
sql>delete from emp where deptno=10;
3 rows deleted.
sql>select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---- ------ ----- ---- --------- -------- -------- --------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN ALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
11 rows selected.
sql>execute dbms_flashback.enable_at_system_change_number(122592);
PL/SQL procedure successfully completed.
(or)
sql>execute dbms_flashback.enable_at_time(timestamp '2008-04-10
10:15:00');
PL/SQL procedure successfully completed.
sql>select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---- ------ ----- ---- --------- -------- -------- --------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN ALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
14 rows selected.
sql>execute dbms_flashback.disable;
PL/SQL procedure successfully completed.
sql>select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---- ------ ----- ---- --------- -------- -------- --------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN ALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
11 rows selected.
