基于时间点的恢复

做实验前做过全备。

SQL> insert into ttest values(4);

 

1 row created.

 

SQL> insert into ttest values(3);

 

1 row created.

 

SQL> commit;

 

Commit complete.

 

SQL> alter system switch logfile;

 

System altered.

 

SQL> insert into ttest values(2);

 

1 row created.

 

SQL> insert into ttest values(1);

 

1 row created.

 

SQL> commit;

 

Commit complete.

 

SQL> alter system switch logfile;

 

System altered.

 

SQL> commit;

 

Commit complete.

 

SQL> alter system switch logfile;

System altered.

 

SQL> alter system switch logfile;

 

System altered.

 

SQL> host date

Wed Aug 29 21:56:08 CST 2012

 

SQL> truncate table ttest;

 

Table truncated.

 

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup mount;

ORACLE instance started.

 

Total System Global Area 1241513984 bytes

Fixed Size                   1219136 bytes

Variable Size              318768576 bytes

Database Buffers           905969664 bytes

Redo Buffers                15556608 bytes

Database mounted.

 

SQL> ho cp -f /home/oracle/backup/* /opt/app/oracle/oradata/orcl/ ;

 

SQL> select file#,to_char(time,'yyyy-mm-dd hh24:mi:ss') from v$recover_file; ----备份时间

 

     FILE# TO_CHAR(TIME,'YYYY-

---------- -------------------

         1 2012-08-29 21:39:37

         2 2012-08-29 21:39:37

         3 2012-08-29 21:39:37

         4 2012-08-29 21:39:37

         5 2012-08-29 21:39:37

         6 2012-08-29 21:39:37

 

6 rows selected.

 

SQL> recover database until time '2012-08-29 21:56:08';

ORA-00279: change 1177160 generated at 08/29/2012 21:39:37 needed for thread 1

ORA-00289: suggestion :

/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_3_%u_.arc

ORA-00280: change 1177160 for thread 1 is in sequence #3

 

 

Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

auto

ORA-00279: change 1178006 generated at 08/29/2012 21:42:36 needed for thread 1

ORA-00289: suggestion :

/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_4_%u_.arc

ORA-00280: change 1178006 for thread 1 is in sequence #4

ORA-00278: log file

'/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_3_83w72d

7q_.arc' no longer needed for this recovery

 

 

ORA-00279: change 1178013 generated at 08/29/2012 21:42:52 needed for thread 1

ORA-00289: suggestion :

/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_5_%u_.arc

ORA-00280: change 1178013 for thread 1 is in sequence #5

ORA-00278: log file

'/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_4_83w72w

29_.arc' no longer needed for this recovery

 

 

ORA-00279: change 1178040 generated at 08/29/2012 21:54:05 needed for thread 1

ORA-00289: suggestion :

/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_1_%u_.arc

ORA-00280: change 1178040 for thread 1 is in sequence #1

ORA-00278: log file

'/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_5_83w7qx

k7_.arc' no longer needed for this recovery

 

 

ORA-00279: change 1178243 generated at 08/29/2012 21:55:06 needed for thread 1

ORA-00289: suggestion :

/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_2_%u_.arc

ORA-00280: change 1178243 for thread 1 is in sequence #2

ORA-00278: log file

'/opt/app/oracle/flash_recovery_area/ORCL/archivelog/2012_08_29/o1_mf_1_1_83w7st

oq_.arc' no longer needed for this recovery

 

 

Log applied.

Media recovery complete.

 

SQL> alter database open resetlogs;

 

Database altered.

 

SQL> select * from ttest;

 

        ID

----------

         4

         3

         2

         1

 

SQL>