Oracle 10g,跨Resetlogs时间点恢复

在Oracle10g以前，在进行了不完全恢复使用resetlogs选项打开数据库以后，Oracle建议你要立即进行全备份。

 

因为日志序号会被置位，以防止后续日志被应用。resetlogs之前的备份将不能用于进行跨域resetlogs时间点的恢复。

 

在Oracle10g中，Oracle允许跨越resetlogs时间点进行完全/不完全恢复。

 

看一下测试的例子:

 

1.全备份数据库

 

$ rman target /

 

Recovery Manager: Release 10.1.0.2.0 - 64bit Production

 

Copyright (c) 1995, 2004, Oracle.  All rights reserved.

 

connected to target database: EYGLE (DBID=1337390772)

 

RMAN> backup database plus archivelog delete all input;

 

Starting backup at 2005-04-05 16:29:08

current log archived

using target database controlfile instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=143 devtype=DISK

channel ORA_DISK_1: starting archive log backupset

channel ORA_DISK_1: specifying archive log(s) in backup set

input archive log thread=1 sequence=3 recid=294 stamp=554823466

input archive log thread=1 sequence=4 recid=295 stamp=554828647

input archive log thread=1 sequence=5 recid=297 stamp=554833749

channel ORA_DISK_1: starting piece 1 at 2005-04-05 16:29:16

channel ORA_DISK_1: finished piece 1 at 2005-04-05 16:29:19

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_annnn_TAG20050405T162914_154m2woc_.bkp comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:04

channel ORA_DISK_1: deleting archive log(s)

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_3_154919qm_.arc recid=294 stamp=554823466

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_4_154g3728_.arc recid=295 stamp=554828647

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_5_154m2og4_.arc recid=297 stamp=554833749

Finished backup at 2005-04-05 16:29:20

 

Starting backup at 2005-04-05 16:29:21

using channel ORA_DISK_1

channel ORA_DISK_1: starting full datafile backupset

channel ORA_DISK_1: specifying datafile(s) in backupset

input datafile fno=00009 name=/data1/oradata/systemfile/bigtbs.dbf

input datafile fno=00001 name=/opt/oracle/oradata/eygle/system01.dbf

input datafile fno=00006 name=/opt/oracle/oradata/eygle/EYGLE/datafile/o1_mf_test_03xv34ny_.dbf

input datafile fno=00002 name=/opt/oracle/oradata/eygle/undotbs01.dbf

input datafile fno=00003 name=/opt/oracle/oradata/eygle/sysaux01.dbf

input datafile fno=00010 name=/opt/oracle/oradata/eygle/dfmbrc.dbf

input datafile fno=00008 name=/opt/oracle/oradata/eygle/trans01.dbf

channel ORA_DISK_1: starting piece 1 at 2005-04-05 16:29:22

channel ORA_DISK_1: finished piece 1 at 2005-04-05 16:31:07

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m33kf_.bkp comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:01:45

channel ORA_DISK_1: starting full datafile backupset

channel ORA_DISK_1: specifying datafile(s) in backupset

input datafile fno=00005 name=/data1/oradata/systemfile/eygle01.dbf

input datafile fno=00004 name=/opt/oracle/oradata/eygle/users01.dbf

input datafile fno=00007 name=/opt/oracle/oradata/eygle/EYGLE/datafile/o1_mf_itpub_03xv5g66_.dbf

channel ORA_DISK_1: starting piece 1 at 2005-04-05 16:31:08

channel ORA_DISK_1: finished piece 1 at 2005-04-05 16:31:33

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m6dxm_.bkp comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:25

channel ORA_DISK_1: starting full datafile backupset

channel ORA_DISK_1: specifying datafile(s) in backupset

input datafile fno=00011 name=/opt/oracle/oradata/eygle/t2k01.dbf

channel ORA_DISK_1: starting piece 1 at 2005-04-05 16:31:34

channel ORA_DISK_1: finished piece 1 at 2005-04-05 16:31:41

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m76kz_.bkp comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:07

Finished backup at 2005-04-05 16:31:41

 

Starting backup at 2005-04-05 16:31:41

current log archived

using channel ORA_DISK_1

channel ORA_DISK_1: starting archive log backupset

channel ORA_DISK_1: specifying archive log(s) in backup set

input archive log thread=1 sequence=6 recid=298 stamp=554833902

channel ORA_DISK_1: starting piece 1 at 2005-04-05 16:31:44

channel ORA_DISK_1: finished piece 1 at 2005-04-05 16:31:47

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_annnn_TAG20050405T163142_154m7jpo_.bkp comment=NONE

channel ORA_DISK_1: backup set complete, elapsed time: 00:00:04

channel ORA_DISK_1: deleting archive log(s)

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_6_154m7gb3_.arc recid=298 stamp=554833902

Finished backup at 2005-04-05 16:31:47

 

Starting Control File and SPFILE Autobackup at 2005-04-05 16:31:48

piece handle=/data5/flash_recovery_area/EYGLE/autobackup/2005_04_05/o1_mf_s_554833908_154m7qps_.bkp comment=NONE

Finished Control File and SPFILE Autobackup at 2005-04-05 16:31:56

 

RMAN> exit

 

Recovery Manager complete.

 

2.进行数据更改

 

$ sqlplus "/ as sysdba"

 

SQL*Plus: Release 10.1.0.2.0 - Production on Tue Apr 5 16:32:23 2005

 

Copyright (c) 1982, 2004, Oracle.  All rights reserved.

 

 

Connected to:

Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

 

SYS AS SYSDBA on 2005-04-05 16:32:23 >alter system switch logfile;

 

System altered.

 

SYS AS SYSDBA on 2005-04-05 16:32:30 >select count(*) from t;

 

  COUNT(*)

----------

     18956

 

SYS AS SYSDBA on 2005-04-05 16:33:03 >insert into t select * from t;

 

18956 rows created.

 

SYS AS SYSDBA on 2005-04-05 16:33:17 >commit;

 

Commit complete.

 

SYS AS SYSDBA on 2005-04-05 16:33:19 >alter system switch logfile;

 

System altered.

 

SYS AS SYSDBA on 2005-04-05 16:33:45 >truncate table t;

 

Table truncated.

 

SYS AS SYSDBA on 2005-04-05 16:34:58 >alter system switch logfile;

 

System altered.

 

此时的日志序列情况如下:

 

SYS AS SYSDBA on 2005-04-05 16:35:00 >select * from v$log_history where recid >1811;

 

 RECID      STAMP    THREAD#  SEQUENCE# FIRST_CHANGE# FIRST_TIME          NEXT_CHANGE# RESETLOGS_CHANGE# RESETLOGS_TIME

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

  1812  554813757          1          1      10923677 2005-04-05 09:54:53     10925720          10923677 2005-04-05 09:54:53

  1813  554813974          1          2      10925720 2005-04-05 10:55:57     10925827          10923677 2005-04-05 09:54:53

  1814  554823464          1          3      10925827 2005-04-05 10:59:34     10947409          10923677 2005-04-05 09:54:53

  1815  554828646          1          4      10947409 2005-04-05 13:37:44     10950318          10923677 2005-04-05 09:54:53

  1816  554833748          1          5      10950318 2005-04-05 15:04:06     10953123          10923677 2005-04-05 09:54:53

  1817  554833901          1          6      10953123 2005-04-05 16:29:08     10953187          10923677 2005-04-05 09:54:53

  1818  554833950          1          7      10953187 2005-04-05 16:31:41     10953213          10923677 2005-04-05 09:54:53

  1819  554834005          1          8      10953213 2005-04-05 16:32:30     10953633          10923677 2005-04-05 09:54:53

  1820  554834118          1          9      10953633 2005-04-05 16:33:25     10953726          10923677 2005-04-05 09:54:53

 

9 rows selected.

 

关闭数据库:

SYS AS SYSDBA on 2005-04-05 16:35:18 >shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

 

SYS AS SYSDBA on 2005-04-05 16:37:30 >exit

Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

 

3.执行不完全恢复

$ rman target /

 

Recovery Manager: Release 10.1.0.2.0 - 64bit Production

 

Copyright (c) 1995, 2004, Oracle.  All rights reserved.

 

connected to target database (not started)

 

RMAN> startup mount;

 

Oracle instance started

database mounted

 

Total System Global Area     314572800 bytes

 

Fixed Size                     1301704 bytes

Variable Size                261890872 bytes

Database Buffers              50331648 bytes

Redo Buffers                   1048576 bytes

 

RMAN> run {

2> set until sequence 8 thread 1;

3> restore database;

4> recover database;

5> }

 

executing command: SET until clause

using target database controlfile instead of recovery catalog

 

Starting restore at 2005-04-05 16:39:17

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=160 devtype=DISK

 

datafile 8 not processed because file is read-only

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00001 to /opt/oracle/oradata/eygle/system01.dbf

restoring datafile 00002 to /opt/oracle/oradata/eygle/undotbs01.dbf

restoring datafile 00003 to /opt/oracle/oradata/eygle/sysaux01.dbf

restoring datafile 00006 to /opt/oracle/oradata/eygle/EYGLE/datafile/o1_mf_test_03xv34ny_.dbf

restoring datafile 00009 to /data1/oradata/systemfile/bigtbs.dbf

restoring datafile 00010 to /opt/oracle/oradata/eygle/dfmbrc.dbf

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m33kf_.bkp tag=TAG20050405T162921

channel ORA_DISK_1: restore complete

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00004 to /opt/oracle/oradata/eygle/users01.dbf

restoring datafile 00005 to /data1/oradata/systemfile/eygle01.dbf

restoring datafile 00007 to /opt/oracle/oradata/eygle/EYGLE/datafile/o1_mf_itpub_03xv5g66_.dbf

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m6dxm_.bkp tag=TAG20050405T162921

channel ORA_DISK_1: restore complete

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00011 to /opt/oracle/oradata/eygle/t2k01.dbf

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m76kz_.bkp tag=TAG20050405T162921

channel ORA_DISK_1: restore complete

Finished restore at 2005-04-05 16:41:45

 

Starting recover at 2005-04-05 16:41:46

using channel ORA_DISK_1

datafile 8 not processed because file is offline

 

starting media recovery

 

archive log thread 1 sequence 7 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_7_154m8z7k_.arc

channel ORA_DISK_1: starting archive log restore to default destination

channel ORA_DISK_1: restoring archive log

archive log thread=1 sequence=6

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_annnn_TAG20050405T163142_154m7jpo_.bkp tag=TAG20050405T163142

channel ORA_DISK_1: restore complete

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_6_154mtkfk_.arc thread=1 sequence=6

channel default: deleting archive log(s)

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_6_154mtkfk_.arc recid=302 stamp=554834513

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_7_154m8z7k_.arc thread=1 sequence=7

media recovery complete

Finished recover at 2005-04-05 16:41:57

 

RMAN> alter database open resetlogs;

 

database opened

 

RMAN> exit

 

Recovery Manager complete.

 

4.此时的数据库状态

$ sqlplus "/ as sysdba"

 

SQL*Plus: Release 10.1.0.2.0 - Production on Tue Apr 5 16:43:58 2005

 

Copyright (c) 1982, 2004, Oracle.  All rights reserved.

 

Connected to:

Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

 

SYS AS SYSDBA on 2005-04-05 16:43:58 >archive log list;

Database log mode              Archive Mode

Automatic archival             Enabled

Archive destination            USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence     1

Next log sequence to archive   1

Current log sequence           1

SYS AS SYSDBA on 2005-04-05 16:44:01 >select count(*) from t;

 

  COUNT(*)

----------

     18956

 

5.继续进行数据更改

 

SYS AS SYSDBA on 2005-04-05 16:44:08 >create table tt as select * from dba_users;

 

Table created.

 

SYS AS SYSDBA on 2005-04-05 16:45:51 >alter system switch logfile;

 

System altered.

 

SYS AS SYSDBA on 2005-04-05 16:45:56 >select count(*) from tt;

 

  COUNT(*)

----------

        12

 

SYS AS SYSDBA on 2005-04-05 16:46:01 >insert into tt select * from tt;

 

12 rows created.

 

SYS AS SYSDBA on 2005-04-05 16:46:13 >commit;

 

Commit complete.

 

SYS AS SYSDBA on 2005-04-05 16:46:16 >alter system switch logfile;

 

System altered.

 

此时的日志序列:

 

SYS AS SYSDBA on 2005-04-05 17:46:19 >select * from v$log_history where recid >1811;

 

RECID      STAMP    THREAD#  SEQUENCE# FIRST_CHANGE# FIRST_TIME          NEXT_CHANGE# RESETLOGS_CHANGE# RESETLOGS_TIME

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

1812  554813757          1          1      10923677 2005-04-05 09:54:53     10925720          10923677 2005-04-05 09:54:53

1813  554813974          1          2      10925720 2005-04-05 10:55:57     10925827          10923677 2005-04-05 09:54:53

1814  554823464          1          3      10925827 2005-04-05 10:59:34     10947409          10923677 2005-04-05 09:54:53

1815  554828646          1          4      10947409 2005-04-05 13:37:44     10950318          10923677 2005-04-05 09:54:53

1816  554833748          1          5      10950318 2005-04-05 15:04:06     10953123          10923677 2005-04-05 09:54:53

1817  554833901          1          6      10953123 2005-04-05 16:29:08     10953187          10923677 2005-04-05 09:54:53

1818  554833950          1          7      10953187 2005-04-05 16:31:41     10953213          10923677 2005-04-05 09:54:53

1819  554834005          1          8      10953213 2005-04-05 16:32:30     10953633          10923677 2005-04-05 09:54:53

1820  554834118          1          9      10953633 2005-04-05 16:33:25     10953726          10923677 2005-04-05 09:54:53

1821  554834756          1          1      10953214 2005-04-05 16:42:34     10953433          10953214 2005-04-05 16:42:34

1822  554834781          1          2      10953433 2005-04-05 16:45:56     10953445          10953214 2005-04-05 16:42:34

 

11 rows selected.

 

SYS AS SYSDBA on 2005-04-05 16:46:21 >shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SYS AS SYSDBA on 2005-04-05 16:47:38 >exit

Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

 

6.再次执行恢复

 

$ rman target /

 

Recovery Manager: Release 10.1.0.2.0 - 64bit Production

 

Copyright (c) 1995, 2004, Oracle.  All rights reserved.

 

connected to target database (not started)

 

RMAN> startup mount;

 

Oracle instance started

database mounted

 

Total System Global Area     314572800 bytes

 

Fixed Size                     1301704 bytes

Variable Size                261890872 bytes

Database Buffers              50331648 bytes

Redo Buffers                   1048576 bytes

 

RMAN> run {

2> restore database;

3> recover database;

4> }

 

Starting restore at 2005-04-05 16:49:54

using target database controlfile instead of recovery catalog

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=160 devtype=DISK

 

datafile 8 not processed because file is read-only

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00001 to /opt/oracle/oradata/eygle/system01.dbf

restoring datafile 00002 to /opt/oracle/oradata/eygle/undotbs01.dbf

restoring datafile 00003 to /opt/oracle/oradata/eygle/sysaux01.dbf

restoring datafile 00006 to /opt/oracle/oradata/eygle/EYGLE/datafile/o1_mf_test_03xv34ny_.dbf

restoring datafile 00009 to /data1/oradata/systemfile/bigtbs.dbf

restoring datafile 00010 to /opt/oracle/oradata/eygle/dfmbrc.dbf

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m33kf_.bkp tag=TAG20050405T162921

channel ORA_DISK_1: restore complete

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00004 to /opt/oracle/oradata/eygle/users01.dbf

restoring datafile 00005 to /data1/oradata/systemfile/eygle01.dbf

restoring datafile 00007 to /opt/oracle/oradata/eygle/EYGLE/datafile/o1_mf_itpub_03xv5g66_.dbf

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m6dxm_.bkp tag=TAG20050405T162921

channel ORA_DISK_1: restore complete

channel ORA_DISK_1: starting datafile backupset restore

channel ORA_DISK_1: specifying datafile(s) to restore from backup set

restoring datafile 00011 to /opt/oracle/oradata/eygle/t2k01.dbf

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_nnndf_TAG20050405T162921_154m76kz_.bkp tag=TAG20050405T162921

channel ORA_DISK_1: restore complete

Finished restore at 2005-04-05 16:52:31

 

Starting recover at 2005-04-05 16:52:32

using channel ORA_DISK_1

datafile 8 not processed because file is offline

 

starting media recovery

 

archive log thread 1 sequence 7 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_7_154m8z7k_.arc

archive log thread 1 sequence 1 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_1_154n24v5_.arc

archive log thread 1 sequence 2 is already on disk as file /data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_2_154n2y40_.arc

channel ORA_DISK_1: starting archive log restore to default destination

channel ORA_DISK_1: restoring archive log

archive log thread=1 sequence=6

channel ORA_DISK_1: restored backup piece 1

piece handle=/data5/flash_recovery_area/EYGLE/backupset/2005_04_05/o1_mf_annnn_TAG20050405T163142_154m7jpo_.bkp tag=TAG20050405T163142

channel ORA_DISK_1: restore complete

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_6_154ngror_.arc thread=1 sequence=6

channel default: deleting archive log(s)

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_6_154ngror_.arc recid=306 stamp=554835160

archive log filename=/data5/flash_recovery_area/EYGLE/archivelog/2005_04_05/o1_mf_1_7_154m8z7k_.arc thread=1 sequence=7

media recovery complete

Finished recover at 2005-04-05 16:53:04

 

RMAN> alter database open;

 

database opened

 

RMAN> exit

 

Recovery Manager complete.

 

7.检查数据恢复情况

 

注意此次恢复跨越了resetlogs时间点

 

$ sqlplus "/ as sysdba"

 

SQL*Plus: Release 10.1.0.2.0 - Production on Tue Apr 5 16:53:56 2005

 

Copyright (c) 1982, 2004, Oracle.  All rights reserved.

 

Connected to:

Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production

With the Partitioning, OLAP and Data Mining options

 

SYS AS SYSDBA on 2005-04-05 16:53:56 >select count(*) from t;

 

  COUNT(*)

----------

     18956

 

SYS AS SYSDBA on 2005-04-05 16:54:01 >select count(*) from tt;

 

  COUNT(*)

----------

        24

 

SYS AS SYSDBA on 2005-04-05 16:54:07 >

SYS AS SYSDBA on 2005-04-05 16:54:47 >

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