Vous pouvez le faire en utilisant Flashback fonctionnalité.
1.Flashback par SCN
SELECT column_list
FROM table_name
AS OF SCN scn_number;
2.Flashback par TIMESTAMP
SELECT column_list
FROM table_name
AS OF TIMESTAMP TO_TIMESTAMP('the timestamp value');
Pour obtenir current_scn et systimestamp, interrogez :
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
Voyons un exemple :
Pour flashback la table à l'ancien scn, utilisez FLASHBACK TABLE..TO SCN clause.
SQL> DROP TABLE string_ex PURGE;
Table dropped.
SQL> CREATE TABLE string_ex (sl_ps_code VARCHAR2(20) );
Table created.
SQL> INSERT INTO string_ex (sl_ps_code) VALUES ('AR14ASM0002');
1 row created.
SQL> INSERT INTO string_ex (sl_ps_code) VALUES ('AR14SFT0018');
1 row created.
SQL> INSERT INTO string_ex (sl_ps_code) VALUES ('AR14SFT0019');
1 row created.
SQL> INSERT INTO string_ex (sl_ps_code) VALUES ('AR14SFT0062');
1 row created.
SQL> COMMIT;
Commit complete.
SQL> SELECT current_scn, SYSTIMESTAMP FROM v$database;
CURRENT_SCN SYSTIMESTAMP
-------------------- --------------------------------------------
13818123201277 29-OCT-14 03.02.17.419000 PM +05:30
SQL> SELECT current_scn, SYSTIMESTAMP FROM v$database;
CURRENT_SCN SYSTIMESTAMP
-------------------- --------------------------------------------
13818123201280 29-OCT-14 03.02.22.785000 PM +05:30
SQL> SELECT current_scn, SYSTIMESTAMP FROM v$database;
CURRENT_SCN SYSTIMESTAMP
-------------------- --------------------------------------------
13818123201282 29-OCT-14 03.02.26.781000 PM +05:30
SQL> SELECT * FROM string_ex;
SL_PS_CODE
---------------
AR14ASM0002
AR14SFT0018
AR14SFT0019
AR14SFT0062
SQL>
J'ai quatre lignes dans le tableau .
SQL> ALTER TABLE string_ex ENABLE ROW MOVEMENT;
Table altered.
SQL>
Le mouvement de ligne est requis.
SQL> DELETE FROM string_ex WHERE ROWNUM =1;
1 row deleted.
SQL>
SQL> COMMIT;
Commit complete.
SQL>
SQL> SELECT * FROM string_ex;
SL_PS_CODE
---------------
AR14SFT0018
AR14SFT0019
AR14SFT0062
J'ai maintenant supprimé une ligne et validé les modifications.
SQL> FLASHBACK TABLE string_ex TO SCN 13818123201277;
Flashback complete.
Le retour en arrière est terminé
SQL> SELECT * FROM string_ex;
SL_PS_CODE
---------------
AR14ASM0002
AR14SFT0018
AR14SFT0019
AR14SFT0062
SQL>
J'ai maintenant ma table à l'ancien état et la ligne est de retour
