Oracle PL/SQL/System Packages/dbms flashback

DBMS_FLASHBACK.ENABLE_AT_TIME

 
SQL>
SQL>
SQL> create table ord(
  2           gift_id                    integer         primary key
  3          ,emp_id                integer
  4          ,register_date              date not null
  5          ,total_price                number(7,2)
  6          ,deliver_date               date
  7          ,deliver_time               varchar2(7)
  8          ,payment                    varchar2(2)
  9          ,emp_no                     number(3,0)
 10          ,deliver_name               varchar2(35)
 11          ,message                    varchar2(100)
 12  );
Table created.
SQL> --  order table inserts
SQL> insert into ord(gift_id,emp_id,register_date,total_price,deliver_date,deliver_time,payment,emp_no,deliver_name,message)values
  2                 (1,1,"14-Feb-2009", 123.12, "14-Feb-2009", "12 noon", "CA",1, null, "Happy Birthday to you");
1 row created.
SQL> insert into ord(gift_id  ,emp_id ,register_date ,total_price ,deliver_date ,deliver_time ,payment ,emp_no,deliver_name ,message)values
  2                 (2,1,"14-Feb-2009", 50.98, "14-feb-2009", "1 pm", "CA",7, "name1", "Happy Birthday");
1 row created.
SQL> insert into ord(gift_id  ,emp_id ,register_date ,total_price ,deliver_date ,deliver_time,payment ,emp_no,deliver_name ,message )values
  2                 (3, 2,"14-Feb-2009", 35.99, "14-feb-2009", "1 pm", "VS",2, "Tom", "Happy Birthday");
1 row created.
SQL> insert into ord(gift_id  ,emp_id ,register_date ,total_price ,deliver_date ,deliver_time,payment ,emp_no,deliver_name ,message )values
  2                 (4, 2,"14-Feb-2009", 19.95, "14-feb-2009", "5 pm", "CA",2, "Mary", "Happy Birthday");
1 row created.
SQL>
SQL> exec DBMS_FLASHBACK.ENABLE_AT_TIME ( SYSDATE - (1/24) );
BEGIN DBMS_FLASHBACK.ENABLE_AT_TIME ( SYSDATE - (1/24) ); END;
*
ERROR at line 1:
ORA-08183: Flashback cannot be enabled in the middle of a transaction
ORA-06512: at "SYS.DBMS_FLASHBACK", line 3
ORA-06512: at line 1

SQL>
SQL> SELECT * FROM ord;
         1          1 14-FEB-09      123.12 14-FEB-09 12 noon CA          1
Happy Birthday to you
         2          1 14-FEB-09       50.98 14-FEB-09 1 pm    CA          7 name1
Happy Birthday
         3          2 14-FEB-09       35.99 14-FEB-09 1 pm    VS          2 Tom
Happy Birthday
         4          2 14-FEB-09       19.95 14-FEB-09 5 pm    CA          2 Mary
Happy Birthday

4 rows selected.
SQL>
SQL> exec DBMS_FLASHBACK.DISABLE;
PL/SQL procedure successfully completed.
SQL>
SQL> drop table ord;
Table dropped.
SQL>

Enter flashback mode, going back 10 minutes

  
SQL> --
SQL> exec dbms_flashback.enable_at_time(sysdate - 10/(24*60));
PL/SQL procedure successfully completed.
SQL> --

Leave Flashback mode

  
SQL> exec dbms_flashback.disable;
PL/SQL procedure successfully completed.
SQL>
SQL>
SQL> --