/* -- AS OF TIMESTAMP --	*/
SELECT * FROM vms.dvbt606a
AS OF TIMESTAMP to_timestamp ('12-Sep-12 12:20', 'DD-Mon-RR HH24:MI');

INSERT INTO vms.dvbt606a
SELECT * FROM vms.dvbt606a
AS OF TIMESTAMP to_timestamp ('12-Sep-12 12:20', 'DD-Mon-RR HH24:MI')
WHERE TRANS_DATE BETWEEN TO_DATE('01-MAY-12','DD-MON-YY')
AND TO_DATE('31-MAY-12','DD-MON-YY');