基于cancel的不完全恢复

过程：插数据56--查日志--关库--删文件，归档和当前日志组--起库报错--查询--转出文件--恢复报错--关库--重新转储所有数据文件--mount--不完全恢复--开库resetlogs

1、首先做一个全备份

sys@TEST0910>  @/u01/app/oracle/bak/cold_bak

 

2、插入三次数据，分别是提交归档，提交不归档，不提交不归档

 

sys@TEST0910> select count(*) from scott.test10;

  COUNT(*)

----------

        14

1 row selected.

sys@TEST0910> insert into scott.test10 select * from scott.emp;

14 rows created.

sys@TEST0910> commit;

Commit complete.

sys@TEST0910> alter system archive log current;

System altered.

sys@TEST0910> select count(*) from scott.test10;

  COUNT(*)

----------

        28

1 row selected.

sys@TEST0910> insert into scott.test10 select * from scott.emp;

14 rows created.

sys@TEST0910> commit;

Commit complete.

sys@TEST0910> select count(*) from scott.test10;

  COUNT(*)

----------

        42

1 row selected.

sys@TEST0910> insert into scott.test10 select * from scott.emp;

14 rows created.

sys@TEST0910> select count(*) from scott.test10;

  COUNT(*)

----------

        56

1 row selected.

 

 

3、查询当前日志组以及数据文件的位置

sys@TEST0910> select * from v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES  BLOCKSIZE    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME

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

         1          1          1   52428800        512          1 YES ACTIVE                 1886382 22-SEP-13      1888062 22-SEP-13

         2          1          2   52428800        512          1 NO  CURRENT                1888062 22-SEP-13   2.8147E+14

         3          1          0   52428800        512          1 YES UNUSED                       0                      0

3 rows selected.

sys@TEST0910> col member for a50

sys@TEST0910> select * from v$logfile;

    GROUP# STATUS  TYPE    MEMBER                                             IS_

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

         2         ONLINE  /u01/app/oracle/oradata/test0910/redo02.log        NO

         1         ONLINE  /u01/app/oracle/oradata/test0910/redo01.log        NO

         3         ONLINE  /u01/app/oracle/oradata/test0910/redo03.log        NO

3 rows selected.

sys@TEST0910> select name from v$archived_log;

NAME

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

/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_3_93xzwjf2_.arc

/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_4_93y4xkgl_.arc

/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_5_93y8cd3d_.arc

/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_1_93ybyg39_.arc

/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_2_93ybyrlr_.arc

/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_3_93yclq3y_.arc

/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_1_93ydsdf2_.arc

查看数据文件

sys@TEST0910> select file#,name from v$datafile;

     FILE# NAME

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

         1 /u01/app/oracle/oradata/test0910/system01.dbf

         2 /u01/app/oracle/oradata/test0910/sysaux01.dbf

         3 /u01/app/oracle/oradata/test0910/undotbs01.dbf

         4 /u01/app/oracle/oradata/test0910/disk1/users01.dbf

         5 /u01/app/oracle/oradata/test0910/example01.dbf

         6 /u01/app/oracle/oradata/test0910/testtb.dbf

         7 /u01/app/oracle/oradata/test0910/lxtb01.dbf

7 rows selected.

 

 

4、模拟断电并且删除数据文件，当前日志文件，归档日志文件

 

sys@TEST0910> shutdown abort

ORACLE instance shut down.

当前日志没了，数据文件没了，归档日志没了

[oracle@rtest /]$ rm /u01/app/oracle/oradata/test0910/disk1/users01.dbf

[oracle@rtest /]$ rm /u01/app/oracle/oradata/test0910/redo02.log

[oracle@rtest /]$ rm /u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_1_93ydsdf2_.arc

[oracle@rtest /]$ rm /u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_3_93yclq3y_.arc

 

 

5、起库报错

sys@TEST0910> startup;

ORACLE instance started.

Total System Global Area 2505338880 bytes

Fixed Size                  2230952 bytes

Variable Size             587203928 bytes

Database Buffers         1895825408 bytes

Redo Buffers               20078592 bytes

Database mounted.

ORA-01157: cannot identify/lock data file 4 - see DBWR trace file

ORA-01110: data file 4: '/u01/app/oracle/oradata/test0910/disk1/users01.dbf'

sys@TEST0910> select file#,error from v$recover_file;

     FILE# ERROR

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

         4 FILE NOT FOUND

1 row selected.

 

6，shutdown abort后转储所有冷备份的数据文件

sys@TEST0910> shutdown abort;

ORACLE instance shut down.

转储所有的数据文件

[oracle@rtest /]$ cp /u01/app/oracle/bak/cold_bak/users01.dbf /u01/app/oracle/oradata/test0910/disk1/users01.dbf

[oracle@rtest /]$ cp /u01/app/oracle/bak/cold_bak/example01.dbf /u01/app/oracle/oradata/test0910/example01.dbf

[oracle@rtest /]$ cp /u01/app/oracle/bak/cold_bak/lxtb01.dbf /u01/app/oracle/oradata/test0910/lxtb01.dbf

[oracle@rtest /]$ cp /u01/app/oracle/bak/cold_bak/sysaux01.dbf /u01/app/oracle/oradata/test0910/sysaux01.dbf

[oracle@rtest /]$ cp /u01/app/oracle/bak/cold_bak/system01.dbf /u01/app/oracle/oradata/test0910/system01.dbf

[oracle@rtest /]$ cp /u01/app/oracle/bak/cold_bak/testtb.dbf /u01/app/oracle/oradata/test0910/testtb.dbf

[oracle@rtest /]$ cp /u01/app/oracle/bak/cold_bak/undotbs01.dbf /u01/app/oracle/oradata/test0910/undotbs01.dbf

 

7、起库到mount状态，使用基于cancel的不完全恢复，最后resetlogs打开数据库。

sys@TEST0910> startup mount;

ORACLE instance started.

Total System Global Area 2505338880 bytes

Fixed Size                  2230952 bytes

Variable Size             587203928 bytes

Database Buffers         1895825408 bytes

Redo Buffers               20078592 bytes

Database mounted.

sys@TEST0910> recover database until cancel;

ORA-00279: change 1887633 generated at 09/22/2013 14:06:32 needed for thread 1

ORA-00289: suggestion : /u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_1_93ydsdf2_.arc

ORA-00280: change 1887633 for thread 1 is in sequence #1

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

auto

ORA-00308: cannot open archived log '/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_1_93ydsdf2_.arc'

ORA-27037: unable to obtain file status

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

ORA-00308: cannot open archived log '/u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_1_93ydsdf2_.arc'

ORA-27037: unable to obtain file status

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

sys@TEST0910> recover database until cancel;

ORA-00279: change 1887633 generated at 09/22/2013 14:06:32 needed for thread 1

ORA-00289: suggestion : /u01/app/oracle/fast_recovery_area/TEST0910/archivelog/2013_09_22/o1_mf_1_1_93ydsdf2_.arc

ORA-00280: change 1887633 for thread 1 is in sequence #1

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

cancel

Media recovery cancelled.

sys@TEST0910> alter database open resetlogs;

Database altered.

sys@TEST0910> select count(*) from scott.test10;

  COUNT(*)

----------

        14

1 row selected.