当前位置:Gxlcms > mysql > 【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

【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

时间:2021-07-01 10:21:17 帮助过:26人阅读

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
分享技术~成就梦想
Blog:

本文出自 “leonarding Blog” 博客,请务必保留此出处

,香港空间

人气教程排行