Library Note
Morgan's Library Page Header
ACE Director Alum Daniel Morgan, founder of Morgan's Library, is scheduling
complimentary technical Workshops on Database Security for the first 30
Oracle Database customers located anywhere in North America, EMEA, LATAM, or
APAC that send an email to
asra_us@oracle.com . Request a Workshop for
your organization today.
Flashback To SCN
Flashback to SCN Demo
FLASHBACK TABLE <schema_name.table_name>
TO SCN <scn_number>
[<ENABLE | DISABLE> TRIGGERS];
CREATE TABLE t
ENABLE ROW MOVEMENT AS
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE 1=2;
desc t
SELECT table_name, row_movement
FROM user_tables;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607529 02-MAR-18 12.46.50.906000 PM -07:00
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'SYS';
COMMIT;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607537 02-MAR-18 12.47.06.453000 PM -07:00
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'WMSYS';
COMMIT;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607545 02-MAR-18 12.47.25.359000 PM -07:00
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'CTXSYS';
COMMIT;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607552 02-MAR-18 12.47.38.187000 PM -07:00
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
conn / as sysdba
set linesize 121
col owner format a10
FLASHBACK TABLE uwclass.t TO SCN 5607547;
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
FLASHBACK TABLE uwclass.t TO SCN 5607540;
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
Flashback To TIMESTAMP
Flashback to Timestamp Demo
FLASHBACK TABLE <schema_name.table_name>
TO TIMESTAMP <timestamp>
[<ENABLE | DISABLE> TRIGGERS];
CREATE TABLE t
ENABLE ROW MOVEMENT AS
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE 1=2;
desc t
SELECT table_name, row_movement
FROM user_tables;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607702 02-MAR-18 12.51.33.390000 PM -07:00
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'SYS';
COMMIT;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607709 02-MAR-18 12.51.46.187000 PM -07:00
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'WMSYS';
COMMIT;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607716 02-MAR-18 12.52.00.562000 PM -07:00
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'CTXSYS';
COMMIT;
SELECT current_scn, SYSTIMESTAMP
FROM v$database;
-- 5607722 02-MAR-18 12.52.13.359000 PM -07:00
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
conn / as sysdba
set linesize 121
col owner format a10
FLASHBACK TABLE uwclass.t TO TIMESTAMP
TO_TIMESTAMP('02-MAR-18 12.51.52.050000');
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
FLASHBACK TABLE uwclass.t TO TIMESTAMP
TO_TIMESTAMP('02-MAR-18 12.51.51.500000');
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
Flashback To Restore Point
Flashback to Restore Point Demo
FLASHBACK TABLE <schema_name.table_name>
TO RESTORE POINT <restore_point>
[<ENABLE | DISABLE> TRIGGERS];
CREATE TABLE t
ENABLE ROW MOVEMENT AS
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE 1=2;
desc t
SELECT table_name, row_movement
FROM user_tables;
CREATE RESTORE POINT zero;
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'SYS';
COMMIT;
CREATE RESTORE POINT one;
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'WMSYS';
COMMIT;
CREATE RESTORE POINT two;
INSERT INTO t
SELECT owner, table_name, tablespace_name
FROM all_tables
WHERE owner = 'CTXSYS';
COMMIT;
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
SELECT scn, time, name
FROM gv$restore_point;
FLASHBACK TABLE t TO RESTORE POINT two;
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
FLASHBACK TABLE t TO RESTORE POINT one;
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;
FLASHBACK TABLE t TO RESTORE POINT zero;
SELECT owner, COUNT(*)
FROM t
GROUP BY owner;