SQL> show parameter db_recovery_file_dest_size;
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest_size big integer 2600M
SQL> show parameter db_recovery_file_dest
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string /u01/app/oracle/flash_recovery
_area
db_recovery_file_dest_size big integer 2600M
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 313860096 bytes
Fixed Size 1336232 bytes
Variable Size 239078488 bytes
Database Buffers 67108864 bytes
Redo Buffers 6336512 bytes
Database mounted.
SQL> alter database archivelog;
Database altered.
SQL> alter database flashback on;
Database altered.
SQL> select name , log_mode,flashback_on from v$database;
NAME LOG_MODE FLASHBACK_ON
--------- ------------ ------------------
ORCL ARCHIVELOG YES
SQL> alter database open;
Database altered.
SQL> alter session set nls_date_formate='yyyy-mm-dd hh24:mi:ss';
alter session set nls_date_formate='yyyy-mm-dd hh24:mi:ss'
*
ERROR at line 1:
ORA-00922: missing or invalid option
SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
Session altered.
SQL> select sysdate ,current_scn from v$database;
SYSDATE CURRENT_SCN
------------------- -----------
2013-03-31 15:25:48 1054061
SQL> drop user scott cascade;
User dropped.
SQL> select sysdate , current_scn from $vdatabase;
select sysdate , current_scn from $vdatabase
*
ERROR at line 1:
ORA-00911: invalid character
SQL> select sysdate , current_scn from v$database;
SYSDATE CURRENT_SCN
------------------- -----------
2013-03-31 15:26:45 1054249
SQL> select * from v$flashback_database_log;
OLDEST_FLASHBACK_SCN OLDEST_FLASHBACK_TI RETENTION_TARGET FLASHBACK_SIZE ESTIMATED_FLASHBACK_SIZE
-------------------- ------------------- ---------------- -------------- ------------------------
1053838 2013-03-31 15:22:25 1440 8192000 0
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 313860096 bytes
Fixed Size 1336232 bytes
Variable Size 239078488 bytes
Database Buffers 67108864 bytes
Redo Buffers 6336512 bytes
Database mounted.
SQL> flashback database to timestape to_date('2013-03-31 15:26:45','yyyy-mm-dd hh24:mi:ss');
flashback database to timestape to_date('2013-03-31 15:26:45','yyyy-mm-dd hh24:mi:ss')
*
ERROR at line 1:
ORA-38724: Invalid option to the FLASHBACK DATABASE command.
SQL> flashback database to timestamp to_date('2013-03-31 15:26:45','yyyy-mm-dd hh24:mi:ss');
Flashback complete.
SQL> alter database open read only;
Database altered.
SQL> select * from scott.test_query;
select * from scott.test_query
*
ERROR at line 1:
ORA-00942: table or view does not exist
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 313860096 bytes
Fixed Size 1336232 bytes
Variable Size 239078488 bytes
Database Buffers 67108864 bytes
Redo Buffers 6336512 bytes
Database mounted.
SQL> flashback database to timestamp to_date('2013-03-31 15:23:45','yyyy-mm-dd hh24:mi:ss');
Flashback complete.
SQL> alter database open read only;
Database altered.
SQL> select * from scott.test_query;
ID NAME SALARY
---------- ---------- ----------
4 Chris 4400
3 Lisa 7700
2 William 6600
1 John 5500
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.
Total System Global Area 313860096 bytes
Fixed Size 1336232 bytes
Variable Size 239078488 bytes
Database Buffers 67108864 bytes
Redo Buffers 6336512 bytes
Database mounted.
SQL> alter database open resetlogs;
Database altered.
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