【原创】假设在有最后一次全库备份之后，你误删除了一张表，请使用备份+归档来将数据库

topic：【原创】假设在有最后一次全库备份之后，你误删除了一张表，请使用备份+归档来将数据库恢复到删除表之前的状态。(不完全恢复)更多精彩内容尽在www.leonar

topic：【原创】假设在有最后一次全库备份之后，你误删除了一张表，请使用备份+归档来将数据库恢复到删除表之前的状态。(不完全恢复)

更多精彩内容尽在

进入Rman做全库备份

[oracle@leonarding1backup]$ rman target /

Recovery Manager:Release 11.2.0.1.0 - Production on Tue Apr 30 11:08:29 2013

Copyright (c)1982, 2009, Oracle and/or its affiliates. All rights reserved.

connected totarget database: LEO1 (DBID=1692458681)

RMAN> backupfull database format

'/u02/app/oracle/backup/full_bk1_%u%p%s.rmn'include current controlfile

plus

archivelog format'/u02/app/oracle/backup/arch_bk1_%u%p%s.rmn' delete all input;

2> 3> 4>

Starting backup at30-APR-13

current logarchived

using targetdatabase control file instead of recovery catalog

allocated channel:ORA_DISK_1

channelORA_DISK_1: SID=22 device type=DISK

RMAN-00571:===========================================================

RMAN-00569:=============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571:===========================================================

RMAN-03002:failure of backup plus archivelog command at 04/30/2013 11:13:27

RMAN-06059:expected archived log not found, loss of archived log compromisesrecoverability

ORA-19625: erroridentifying file /u02/app/oracle/archdata/1_75_813654649.dbf

ORA-27037: unableto obtain file status

Linux-x86_64Error: 2: No such file or directory

Additionalinformation: 3

75号归档日志缺失，Rman在操作系统上找不到对应的日志文件

当手工删除了归档日志以后，Rman备份会检测到日志缺失，从而无法进一步继续执行。
所以此时需要手工执行crosscheck过程，之后Rman备份可以恢复正常

RMAN> crosscheckarchivelog all; 交叉检查，有3个日志被手工删除

released channel:ORA_DISK_1

allocated channel:ORA_DISK_1

channelORA_DISK_1: SID=22 device type=DISK

validation failedfor archived log

archivedlog file name=/u02/app/oracle/archdata/1_75_813654649.dbf RECID=9STAMP=813790708

validation failedfor archived log

archivedlog file name=/u02/app/oracle/archdata/1_76_813654649.dbf RECID=7STAMP=813790702

validation failedfor archived log

archivedlog file name=/u02/app/oracle/archdata/1_77_813654649.dbf RECID=8STAMP=813790706

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_1_813790699.dbf RECID=10 STAMP=813791152

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_2_813790699.dbf RECID=11 STAMP=813913400

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_3_813790699.dbf RECID=12 STAMP=813913401

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_4_813790699.dbf RECID=13 STAMP=813913405

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_5_813790699.dbf RECID=14 STAMP=813933703

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_6_813790699.dbf RECID=15 STAMP=813933734

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_7_813790699.dbf RECID=16 STAMP=814090435

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_8_813790699.dbf RECID=17 STAMP=814090645

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_9_813790699.dbf RECID=18 STAMP=814090877

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_10_813790699.dbf RECID=19 STAMP=814091008

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_11_813790699.dbf RECID=20 STAMP=814091028

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_12_813790699.dbf RECID=21 STAMP=814091032

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_13_813790699.dbf RECID=22 STAMP=814091036

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_14_813790699.dbf RECID=23 STAMP=814091057

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_15_813790699.dbf RECID=24 STAMP=814091184

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_16_813790699.dbf RECID=25 STAMP=814091638

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_17_813790699.dbf RECID=26 STAMP=814091658

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_18_813790699.dbf RECID=27 STAMP=814091709

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_19_813790699.dbf RECID=28 STAMP=814092394

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_20_813790699.dbf RECID=29 STAMP=814092405

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_1_814098124.dbf RECID=30 STAMP=814098353

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_2_814098124.dbf RECID=31 STAMP=814100979

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_3_814098124.dbf RECID=32 STAMP=814101206

validationsucceeded for archived log

archived log filename=/u02/app/oracle/archdata/1_4_814098124.dbf RECID=33 STAMP=814101824

Crosschecked 27objects

RMAN> deleteexpired archivelog all; 删除所有过期归档日志

released channel:ORA_DISK_1

allocated channel:ORA_DISK_1

channelORA_DISK_1: SID=22 device type=DISK

List of ArchivedLog Copies for database with db_unique_name LEO1

=====================================================================

Key Thrd Seq S Low Time

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

9 1 75 X 26-APR-13

Name: /u02/app/oracle/archdata/1_75_813654649.dbf

7 1 76 X 26-APR-13

Name: /u02/app/oracle/archdata/1_76_813654649.dbf

8 1 77 X 26-APR-13

Name: /u02/app/oracle/archdata/1_77_813654649.dbf

Do you really wantto delete the above objects (enter YES or NO)? y 75 76 77号日志被删除

deleted archivedlog

archived log filename=/u02/app/oracle/archdata/1_75_813654649.dbf RECID=9 STAMP=813790708

deleted archivedlog

archived log filename=/u02/app/oracle/archdata/1_76_813654649.dbf RECID=7 STAMP=813790702

deleted archivedlog

archived log filename=/u02/app/oracle/archdata/1_77_813654649.dbf RECID=8 STAMP=813790706

Deleted 3 EXPIREDobjects

RMAN> backup fulldatabase format 现在Rman备份可以恢复正常，同时删除备份过的归档日志

'/u02/app/oracle/backup/full_bk1_%u%p%s.rmn'include current controlfile

plus

archivelog format'/u02/app/oracle/backup/arch_bk1_%u%p%s.rmn' delete all input;2> 3> 4>

Starting backup at30-APR-13

current logarchived

using channelORA_DISK_1

channelORA_DISK_1: starting archived log backup set

channelORA_DISK_1: specifying archived log(s) in backup set

input archived logthread=1 sequence=1 RECID=10 STAMP=813791152

input archived logthread=1 sequence=2 RECID=11 STAMP=813913400

input archived logthread=1 sequence=3 RECID=12 STAMP=813913401

input archived logthread=1 sequence=4 RECID=13 STAMP=813913405

input archived logthread=1 sequence=5 RECID=14 STAMP=813933703

input archived logthread=1 sequence=6 RECID=15 STAMP=813933734

input archived logthread=1 sequence=7 RECID=16 STAMP=814090435

input archived logthread=1 sequence=8 RECID=17 STAMP=814090645

input archived logthread=1 sequence=9 RECID=18 STAMP=814090877

input archived logthread=1 sequence=10 RECID=19 STAMP=814091008

input archived logthread=1 sequence=11 RECID=20 STAMP=814091028

input archived logthread=1 sequence=12 RECID=21 STAMP=814091032

input archived logthread=1 sequence=13 RECID=22 STAMP=814091036

input archived logthread=1 sequence=14 RECID=23 STAMP=814091057

input archived logthread=1 sequence=15 RECID=24 STAMP=814091184

input archived logthread=1 sequence=16 RECID=25 STAMP=814091638

input archived logthread=1 sequence=17 RECID=26 STAMP=814091658

input archived logthread=1 sequence=18 RECID=27 STAMP=814091709

input archived logthread=1 sequence=19 RECID=28 STAMP=814092394

channelORA_DISK_1: starting piece 1 at 30-APR-13

channelORA_DISK_1: finished piece 1 at 30-APR-13

piecehandle=/u02/app/oracle/backup/arch_bk1_0co8cds4112.rmn tag=TAG20130430T113324comment=NONE

channelORA_DISK_1: backup set complete, elapsed time: 00:00:07

channelORA_DISK_1: deleting archived log(s)

archived log filename=/u02/app/oracle/archdata/1_1_813790699.dbf RECID=10 STAMP=813791152

archived log filename=/u02/app/oracle/archdata/1_2_813790699.dbf RECID=11 STAMP=813913400

archived log filename=/u02/app/oracle/archdata/1_3_813790699.dbf RECID=12 STAMP=813913401

archived log filename=/u02/app/oracle/archdata/1_4_813790699.dbf RECID=13 STAMP=813913405

archived log filename=/u02/app/oracle/archdata/1_5_813790699.dbf RECID=14 STAMP=813933703

archived log filename=/u02/app/oracle/archdata/1_6_813790699.dbf RECID=15 STAMP=813933734

archived log filename=/u02/app/oracle/archdata/1_7_813790699.dbf RECID=16 STAMP=814090435

archived log filename=/u02/app/oracle/archdata/1_8_813790699.dbf RECID=17 STAMP=814090645

archived log filename=/u02/app/oracle/archdata/1_9_813790699.dbf RECID=18 STAMP=814090877

archived log filename=/u02/app/oracle/archdata/1_10_813790699.dbf RECID=19 STAMP=814091008

archived log filename=/u02/app/oracle/archdata/1_11_813790699.dbf RECID=20 STAMP=814091028

archived log filename=/u02/app/oracle/archdata/1_12_813790699.dbf RECID=21 STAMP=814091032

archived log filename=/u02/app/oracle/archdata/1_13_813790699.dbf RECID=22 STAMP=814091036

archived log filename=/u02/app/oracle/archdata/1_14_813790699.dbf RECID=23 STAMP=814091057

archived log filename=/u02/app/oracle/archdata/1_15_813790699.dbf RECID=24 STAMP=814091184

archived log filename=/u02/app/oracle/archdata/1_16_813790699.dbf RECID=25 STAMP=814091638

archived log filename=/u02/app/oracle/archdata/1_17_813790699.dbf RECID=26 STAMP=814091658

archived log filename=/u02/app/oracle/archdata/1_18_813790699.dbf RECID=27 STAMP=814091709

archived log filename=/u02/app/oracle/archdata/1_19_813790699.dbf RECID=28 STAMP=814092394

channelORA_DISK_1: starting archived log backup set

channelORA_DISK_1: specifying archived log(s) in backup set

input archived logthread=1 sequence=1 RECID=30 STAMP=814098353

channelORA_DISK_1: starting piece 1 at 30-APR-13

channelORA_DISK_1: finished piece 1 at 30-APR-13

piecehandle=/u02/app/oracle/backup/arch_bk1_0do8cdsc113.rmn tag=TAG20130430T113324comment=NONE

channelORA_DISK_1: backup set complete, elapsed time: 00:00:01

channelORA_DISK_1: deleting archived log(s)

archived log filename=/u02/app/oracle/archdata/1_1_814098124.dbf RECID=30 STAMP=814098353

channelORA_DISK_1: starting archived log backup set

channelORA_DISK_1: specifying archived log(s) in backup set

input archived logthread=1 sequence=20 RECID=29 STAMP=814092405

channelORA_DISK_1: starting piece 1 at 30-APR-13

channelORA_DISK_1: finished piece 1 at 30-APR-13

piecehandle=/u02/app/oracle/backup/arch_bk1_0eo8cdsd114.rmn tag=TAG20130430T113324comment=NONE

channelORA_DISK_1: backup set complete, elapsed time: 00:00:01

channelORA_DISK_1: deleting archived log(s)

archived log filename=/u02/app/oracle/archdata/1_20_813790699.dbf RECID=29 STAMP=814092405

channelORA_DISK_1: starting archived log backup set

channelORA_DISK_1: specifying archived log(s) in backup set

input archived logthread=1 sequence=2 RECID=31 STAMP=814100979

input archived logthread=1 sequence=3 RECID=32 STAMP=814101206

input archived logthread=1 sequence=4 RECID=33 STAMP=814101824

input archived logthread=1 sequence=5 RECID=34 STAMP=814102404

channelORA_DISK_1: starting piece 1 at 30-APR-13

channelORA_DISK_1: finished piece 1 at 30-APR-13

piecehandle=/u02/app/oracle/backup/arch_bk1_0fo8cdse115.rmn tag=TAG20130430T113324comment=NONE

channelORA_DISK_1: backup set complete, elapsed time: 00:00:01

channelORA_DISK_1: deleting archived log(s)

archived log filename=/u02/app/oracle/archdata/1_2_814098124.dbf RECID=31 STAMP=814100979

archived log filename=/u02/app/oracle/archdata/1_3_814098124.dbf RECID=32 STAMP=814101206

archived log filename=/u02/app/oracle/archdata/1_4_814098124.dbf RECID=33 STAMP=814101824

archived log filename=/u02/app/oracle/archdata/1_5_814098124.dbf RECID=34 STAMP=814102404

Finished backup at30-APR-13

Starting backup at30-APR-13

using channelORA_DISK_1

channelORA_DISK_1: starting full datafile backup set

channelORA_DISK_1: specifying datafile(s) in backup set

input datafilefile number=00001 name=/u02/app/oracle/oradata/LEO1/system01.dbf

input datafilefile number=00002 name=/u02/app/oracle/oradata/LEO1/sysaux01.dbf

input datafilefile number=00003 name=/u02/app/oracle/oradata/LEO1/undotbs01.dbf

input datafile filenumber=00005 name=/u02/app/oracle/oradata/LEO1/leo1.dbf

input datafilefile number=00004 name=/u02/app/oracle/oradata/LEO1/users01.dbf

channelORA_DISK_1: starting piece 1 at 30-APR-13

channelORA_DISK_1: finished piece 1 at 30-APR-13

piece handle=/u02/app/oracle/backup/full_bk1_0go8cdsg116.rmntag=TAG20130430T113336 comment=NONE

channelORA_DISK_1: backup set complete, elapsed time: 00:01:25

channelORA_DISK_1: starting full datafile backup set

channelORA_DISK_1: specifying datafile(s) in backup set

including currentcontrol file in backup set

channelORA_DISK_1: starting piece 1 at 30-APR-13

channelORA_DISK_1: finished piece 1 at 30-APR-13

piecehandle=/u02/app/oracle/backup/full_bk1_0ho8cdv5117.rmn tag=TAG20130430T113336comment=NONE

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

Finished backup at30-APR-13

Starting backup at30-APR-13

current logarchived

using channelORA_DISK_1

channelORA_DISK_1: starting archived log backup set

channelORA_DISK_1: specifying archived log(s) in backup set

input archived logthread=1 sequence=6 RECID=35 STAMP=814102503

channelORA_DISK_1: starting piece 1 at 30-APR-13

channelORA_DISK_1: finished piece 1 at 30-APR-13

piecehandle=/u02/app/oracle/backup/arch_bk1_0io8cdv7118.rmn tag=TAG20130430T113503comment=NONE

channelORA_DISK_1: backup set complete, elapsed time: 00:00:01

channelORA_DISK_1: deleting archived log(s)

archived log filename=/u02/app/oracle/archdata/1_6_814098124.dbf RECID=35 STAMP=814102503

Finished backup at30-APR-13

Starting ControlFile and SPFILE Autobackup at 30-APR-13

piecehandle=/u02/app/oracle/backup/control/cf_c-1692458681-20130430-01 comment=NONE

Finished ControlFile and SPFILE Autobackup at 30-APR-13

我们现在进入数据库创建一个表leo1并插入三条记录

SYS@LEO1>createtable leo1 (name varchar2(20),age number,riqi date);

Table created.

SYS@LEO1>insertinto leo1 values('leonarding',28,sysdate);

1 row created.

SYS@LEO1>insertinto leo1 values('sun_vn',26,sysdate);

1 row created.

SYS@LEO1>insertinto leo1 values('tiger',18,sysdate);

1 row created.

SYS@LEO1>commit;

Commit complete.

SYS@LEO1>select* from leo1; 完成

NAME AGE RIQI

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

leonarding 28 30-APR-13

sun_vn 26 30-APR-13

tiger 18 30-APR-13

SYS@LEO1>selectgroup#,members,bytes,archived,sequence#,status from v$log;

GROUP# MEMBERS BYTES ARC SEQUENCE# STATUS

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

1 2 52428800 NO 7 CURRENT

2 2 52428800 YES 5 INACTIVE

5 2 52428800 YES 6 INACTIVE

我们创建表和插入信息是写入当前日志组1

SYS@LEO1>altersystem switch logfile; 切换日志组

System altered.

SYS@LEO1>altersystem switch logfile;

System altered.

SYS@LEO1>selectgroup#,members,bytes,archived,sequence#,status from v$log;

GROUP# MEMBERS BYTES ARC SEQUENCE# STATUS

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

1 2 52428800 YES 7 INACTIVE

2 2 52428800 YES 8 INACTIVE

5 2 52428800 NO 9 CURRENT

现在组1已经完成归档，如果我们此时勿删除了leo1表，我们可以把数据库恢复到7号归档日志的那一点，网站空间，就可以恢复勿删除的leo1表了。我们顺便把当前redolog日志也损坏了，看看可不可以扶起数据库来。

SYS@LEO1>droptable leo1 purge; 删除表

我们删除第五组的2个成员

[oracle@leonarding1LEO1]$ rm -rf redo05.log

[oracle@leonarding1LEO1]$ cd disk2/

[oracle@leonarding1disk2]$ rm -rf redo05_b.log

SYS@LEO1>startup

ORACLE instancestarted.

Total SystemGlobal Area 471830528 bytes

Fixed Size 2214456 bytes

Variable Size 171967944 bytes

DatabaseBuffers 289406976 bytes

Redo Buffers 8241152 bytes

Database mounted.

ORA-00313: openfailed for members of log group 5 of thread 1

ORA-00312: onlinelog 5 thread 1:

'/u02/app/oracle/oradata/LEO1/disk2/redo05_b.log'

ORA-27037: unableto obtain file status

Linux-x86_64Error: 2: No such file or directory

Additionalinformation: 3

ORA-00312: onlinelog 5 thread 1: '/u02/app/oracle/oradata/LEO1/redo05.log'

ORA-27037: unableto obtain file status

Linux-x86_64Error: 2: No such file or directory

Additionalinformation: 3

找不到第五组redo，实际上已经被我们删除了，进入rman进行恢复操作

[oracle@leonarding1backup]$ rman target /

Recovery Manager:Release 11.2.0.1.0 - Production on Tue Apr 30 12:47:55 2013

Copyright (c)1982, 2009, Oracle and/or its affiliates. All rights reserved.

connected totarget database: LEO1 (DBID=1692458681, not open)

RMAN> restoredatabase;

Starting restoreat 30-APR-13

using targetdatabase control file instead of recovery catalog

allocated channel:ORA_DISK_1

channelORA_DISK_1: SID=133 device type=DISK

channelORA_DISK_1: starting datafile backup set restore

channelORA_DISK_1: specifying datafile(s) to restore from backup set

channelORA_DISK_1: restoring datafile 00001 to/u02/app/oracle/oradata/LEO1/system01.dbf

channelORA_DISK_1: restoring datafile 00002 to/u02/app/oracle/oradata/LEO1/sysaux01.dbf

channelORA_DISK_1: restoring datafile 00003 to /u02/app/oracle/oradata/LEO1/undotbs01.dbf

channelORA_DISK_1: restoring datafile 00004 to/u02/app/oracle/oradata/LEO1/users01.dbf

channelORA_DISK_1: restoring datafile 00005 to /u02/app/oracle/oradata/LEO1/leo1.dbf

channelORA_DISK_1: reading from backup piece /u02/app/oracle/backup/full_bk1_0go8cdsg116.rmn

channelORA_DISK_1: piece handle=/u02/app/oracle/backup/full_bk1_0go8cdsg116.rmntag=TAG20130430T113336

channelORA_DISK_1: restored backup piece 1

channelORA_DISK_1: restore complete, elapsed time: 00:02:05

Finished restoreat 30-APR-13

我们只需恢复到7号归档日志状态点，就可以找回我们删除了的leo1表

RMAN> recoverdatabase until sequence 7 thread 1;

Starting recoverat 30-APR-13

using channelORA_DISK_1

starting mediarecovery

channelORA_DISK_1: starting archived log restore to default destination

channel ORA_DISK_1:restoring archived log

archived logthread=1 sequence=6

channelORA_DISK_1: reading from backup piece/u02/app/oracle/backup/arch_bk1_0io8cdv7118.rmn

channelORA_DISK_1: piece handle=/u02/app/oracle/backup/arch_bk1_0io8cdv7118.rmntag=TAG20130430T113503

channelORA_DISK_1: restored backup piece 1

channelORA_DISK_1: restore complete, elapsed time: 00:00:01

archived log filename=/u02/app/oracle/archdata/1_6_814098124.dbf thread=1 sequence=6

media recoverycomplete, elapsed time: 00:00:01

Finished recoverat 30-APR-13

SYS@LEO1>alterdatabase open resetlogs;

Database altered.

resetlogs做的几件事：

1）数据文件头scn号为准，同步控制文件和在线日志文件scn号

2）重新创建redolog日志（创建一个空日志），重置为unused

3）重置归档日志序号从1开始编码

4）让数据库重新进入一个新的生命周期

SYS@LEO1>select* from leo1;

NAME AGE RIQI

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

leonarding 28 30-APR-13

sun_vn 26 30-APR-13

tiger 18 30-APR-13

这个表存在说明应用了 sequence为7的归档

小结：到此我们的系列恢复实验完美完成，里面阐述了各种不同环境下的恢复测试，简明了重做日志和归档日志关系，在什么情况下可以恢复到什么级别，虚拟主机，牢实掌握如上信息，可以让你遇事不慌张事半功倍。

控制文件恢复，重做日志恢复，完全恢复，不完全恢复，备份

Leonarding
2013.4.30
天津&spring
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