How to call dbms_backup_restore to recover a database
This article is about how to call dbms_backup_restore to restore the database, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.
1. View RMAN backup parameters
[oracle@oraserver ~] $rman target /
Recovery Manager: Release 10.2.0.1.0-Production on Mon Aug 15 13:21:54 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to target database: MYDATA (DBID=305115346)
RMAN > show all
Using target database control file instead of recovery catalog
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP OFF; # default
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO'% favored; # default
CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO'/ orahome/oracle/product/10.2.0/db_1/dbs/snapcf_mydata.f'; # default
RMAN > list backup
2. Perform RMAN backup
1. Full database backup
RMAN > backup database
Starting backup at 15-AUG-11
Allocated channel: ORA_DISK_1
Channel ORA_DISK_1: sid=154 devtype=DISK
Channel ORA_DISK_1: starting full datafile backupset
Channel ORA_DISK_1: specifying datafile (s) in backupset
Input datafile fno=00001 name=/oradata/mydata/mydata/system01.dbf
Input datafile fno=00003 name=/oradata/mydata/mydata/sysaux01.dbf
Input datafile fno=00002 name=/oradata/mydata/mydata/undotbs01.dbf
Input datafile fno=00005 name=/oradata/mydata/mydata/example01.dbf
Input datafile fno=00004 name=/oradata/mydata/mydata/users01.dbf
Channel ORA_DISK_1: starting piece 1 at 15-AUG-11
Channel ORA_DISK_1: finished piece 1 at 15-AUG-11
Piece handle=/orahome/flash_recovery_area/MYDATA/backupset/2011_08_15/o1_mf_nnndf_TAG20110815T132445_74kcdxvn_.bkp tag=TAG20110815T132445 comment=NONE
Channel ORA_DISK_1: backup set complete, elapsed time: 00:00:45
Channel ORA_DISK_1: starting full datafile backupset
Channel ORA_DISK_1: specifying datafile (s) in backupset
Including current control file in backupset
Including current SPFILE in backupset
Channel ORA_DISK_1: starting piece 1 at 15-AUG-11
Channel ORA_DISK_1: finished piece 1 at 15-AUG-11
Piece handle=/orahome/flash_recovery_area/MYDATA/backupset/2011_08_15/o1_mf_ncsnf_TAG20110815T132445_74kcgdj8_.bkp tag=TAG20110815T132445 comment=NONE
Channel ORA_DISK_1: backup set complete, elapsed time: 00:00:04
Finished backup at 15-AUG-11
2. Back up the archive log
RMAN > backup archivelog all delete input
Starting backup at 15-AUG-11
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=3 recid=1 stamp=758254922
Input archive log thread=1 sequence=4 recid=2 stamp=758346126
Input archive log thread=1 sequence=5 recid=3 stamp=758459109
Input archive log thread=1 sequence=6 recid=4 stamp=758570310
Input archive log thread=1 sequence=7 recid=5 stamp=758661373
Input archive log thread=1 sequence=8 recid=6 stamp=758729176
Input archive log thread=1 sequence=9 recid=7 stamp=758733084
Input archive log thread=1 sequence=10 recid=8 stamp=758761235
Input archive log thread=1 sequence=11 recid=9 stamp=758844014
Input archive log thread=1 sequence=12 recid=10 stamp=758930411
Input archive log thread=1 sequence=13 recid=11 stamp=759002811
Input archive log thread=1 sequence=14 recid=12 stamp=759046328
Input archive log thread=1 sequence=15 recid=13 stamp=759146966
Input archive log thread=1 sequence=16 recid=14 stamp=759246991
Channel ORA_DISK_1: starting piece 1 at 15-AUG-11
Channel ORA_DISK_1: finished piece 1 at 15-AUG-11
Piece handle=/orahome/flash_recovery_area/MYDATA/backupset/2011_08_15/o1_mf_annnn_TAG20110815T135631_74kf8k2h_.bkp tag=TAG20110815T135631 comment=NONE
Channel ORA_DISK_1: backup set complete, elapsed time: 00:00:36
Channel ORA_DISK_1: deleting archive log (s)
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_04/o1_mf_1_3_73m4g9ht_.arc recid=1 stamp=758254922
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_05/o1_mf_1_4_73oxjffh_.arc recid=2 stamp=758346126
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_06/o1_mf_1_5_73scv41h_.arc recid=3 stamp=758459109
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_07/o1_mf_1_6_73wrg5ov_.arc recid=4 stamp=758570310
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_08/o1_mf_1_7_73zkcwh4_.arc recid=5 stamp=758661373
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_09/o1_mf_1_8_741mlq6o_.arc recid=6 stamp=758729176
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_09/o1_mf_1_9_741qdvq6_.arc recid=7 stamp=758733084
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_09/o1_mf_1_10_742lwl6y_.arc recid=8 stamp=758761235
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_10/o1_mf_1_11_7453qfps_.arc recid=9 stamp=758844014
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_11/o1_mf_1_12_747r39d5_.arc recid=10 stamp=758930411
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_12/o1_mf_1_13_749ysv2t_.arc recid=11 stamp=759002811
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_13/o1_mf_1_14_74c99q5d_.arc recid=12 stamp=759046328
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_14/o1_mf_1_15_74gclo7p_.arc recid=13 stamp=759146966
Archivelog filename=/orahome/flash_recovery_area/MYDATA/archivelog/2011_08_15/o1_mf_1_16_74kf8g2z_.arc recid=14 stamp=759246991
Finished backup at 15-AUG-11
RMAN >
3. View controlfile backup
RMAN > list backup of controlfile
List of Backup Sets
=
BS Key Type LV Size Device Type Elapsed Time Completion Time
2 Full 6.80M DISK 00:00:01 15-AUG-11
BP Key: 2 Status: AVAILABLE Compressed: NO Tag: TAG20110815T132445
Piece Name: / orahome/flash_recovery_area/MYDATA/backupset/2011_08_15/o1_mf_ncsnf_TAG20110815T132445_74kcgdj8_.bkp
Control File Included: Ckp SCN: 1223929 Ckp time: 15-AUG-11
RMAN > exit
Recovery Manager complete.
Second, view the path information of database data files, control files and log files through the view
1. View data files
[oracle@oraserver ~] $sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0-Production on Mon Aug 15 14:02:09 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0-Production
With the Partitioning, OLAP and Data Mining options
View data files
SQL > select name from v$datafile
NAME
/ oradata/mydata/mydata/system01.dbf
/ oradata/mydata/mydata/undotbs01.dbf
/ oradata/mydata/mydata/sysaux01.dbf
/ oradata/mydata/mydata/users01.dbf
/ oradata/mydata/mydata/example01.dbf
2. View log files
SQL > col member for A40
SQL > select * from v$logfile
GROUP# STATUS TYPE MEMBER IS_RECOVERY_DEST_FILE
-
3 ONLINE / oradata/mydata/mydata/redo03.log NO
2 ONLINE / oradata/mydata/mydata/redo02.log NO
1 ONLINE / oradata/mydata/mydata/redo01.log NO
3. View control files
SQL > col name for A40
SQL > select * from v$controlfile
STATUS NAME IS_RECOVERY_DEST_FILE BLOCK_SIZE FILE_SIZE_BLKS
/ oradata/mydata/mydata/control01.ctl NO 16384 430
/ oradata/mydata/mydata/control02.ctl NO 16384 430
/ oradata/mydata/mydata/control03.ctl NO 16384 430
Delete all data files, control files and log files
[oracle@oraserver mydata] $pwd
/ oradata/mydata/mydata
[oracle@oraserver mydata] $ll
The total dosage is 1257640
-rw-r- 1 oracle oinstall 7061504 August 15 14:19 control01.ctl
-rw-r- 1 oracle oinstall 7061504 August 15 14:19 control02.ctl
-rw-r- 1 oracle oinstall 7061504 August 15 14:19 control03.ctl
-rw-r- 1 oracle oinstall 104865792 August 15 14:01 example01.dbf
-rw-r- 1 oracle oinstall 52429312 August 15 14:19 redo01.log
-rw-r- 1 oracle oinstall 52429312 August 14 10:09 redo02.log
-rw-r- 1 oracle oinstall 52429312 August 15 13:56 redo03.log
-rw-r- 1 oracle oinstall 325066752 August 15 14:19 sysaux01.dbf
-rw-r- 1 oracle oinstall 513810432 August 15 14:19 system01.dbf
-rw-r- 1 oracle oinstall 20979712 August 13 06:00 temp01.dbf
-rw-r- 1 oracle oinstall 157294592 August 15 14:18 undotbs01.dbf
-rw-r- 1 oracle oinstall 5251072 August 15 14:01 users01.dbf
[oracle@oraserver mydata] $rm-rf *
[oracle@oraserver mydata] $ls
[oracle@oraserver mydata] $
Restore database with dbms_backup_restore package
[oracle@oraserver mydata] $sqlplus / as sysdba
SQL*Plus: Release 10.2.0.1.0-Production on Mon Aug 15 14:24:57 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0-Production
With the Partitioning, OLAP and Data Mining options
SQL > shutdown abort
ORACLE instance shut down.
SQL > startup
ORACLE instance started.
Total System Global Area 603979776 bytes
Fixed Size 1220796 bytes
Variable Size 180358980 bytes
Database Buffers 415236096 bytes
Redo Buffers 7163904 bytes
ORA-00205: error in identifying control file, check alert log for more info
The control file is lost and the database starts to nomount state.
1. Restore control files
SQL > declare
2 devtype varchar2 (256)
3 done boolean
4 begin
5 devtype:=sys.dbms_backup_restore.deviceallocate (type= >'', ident= > 't1')
6 sys.dbms_backup_restore.restoresetdatafile
7 sys.dbms_backup_restore.restorecontrolfileto (cfname= >'/ oradata/mydata/mydata/control01.ctl')
8 sys.dbms_backup_restore.restorebackuppiece (done= > done,handle= >'/ orahome/flash_recovery_area/MYDATA/backupset/2011_08_15/o1_mf_ncsnf_TAG20110815T132445_74kcgdj8_.bkp')
9 sys.dbms_backup_restore.devicedeallocate
10 end
11 /
PL/SQL procedure successfully completed.
2. Restore data files
SQL > declare
2 devtype varchar2 (256)
3 done boolean
4 begin
5 devtype:=sys.dbms_backup_restore.deviceallocate (type= >'', ident= > 't1')
6 sys.dbms_backup_restore.restoresetdatafile
7 sys.dbms_backup_restore.restoredatafileto (dfnumber= > 01 sys.dbms_backup_restore.restoredatafileto = >'/ oradata/mydata/mydata/system01.dbf')
8 sys.dbms_backup_restore.restoredatafileto (dfnumber= > 02 charge name = >'/ oradata/mydata/mydata/undotbs01.dbf')
9 sys.dbms_backup_restore.restoredatafileto (dfnumber= > 03 sys.dbms_backup_restore.restoredatafileto = >'/ oradata/mydata/mydata/sysaux01.dbf')
10 sys.dbms_backup_restore.restoredatafileto (dfnumber= > 04 camera name = >'/ oradata/mydata/mydata/users01.dbf')
11 sys.dbms_backup_restore.restoredatafileto (dfnumber= > 05 sys.dbms_backup_restore.restoredatafileto Toname = >'/ oradata/mydata/mydata/example01.dbf')
12 sys.dbms_backup_restore.restorebackuppiece (done= > done,handle= >'/ orahome/flash_recovery_area/MYDATA/backupset/2011_08_15/o1_mf_nnndf_TAG20110815T132445_74kcdxvn_.bkp')
13 sys.dbms_backup_restore.devicedeallocate
14 end
15 /
Note: the dfnumber of each dbf file must be the same as the number of each dbf file when there is no failure, which can be queried in select file#,name from v$datafile.
If it is inconsistent, an error will be reported when opening the database after recovery, such as:
SQL >
SQL > alter database mount
Database altered.
SQL > alter database open
Alter database open
*
ERROR at line 1:
ORA-01122: database file 1 failed verification check
ORA-01110: data file 1:'/ oradata/mydata/mydata/system01.dbf'
ORA-01251: Unknown File Header Version read for file number 1
SQL > host ls / oradata/mydata/mydata
Control01.ctl example01.dbf sysaux01.dbf system01.dbf undotbs01.dbf users01.dbf
[oracle@oraserver mydata] $cp control01.ctl control02.ctl
[oracle@oraserver mydata] $cp control01.ctl control03.ctl
SQL > startup nomount
ORA-01081: cannot start already-running ORACLE-shut it down first
SQL > startup mount
ORA-01081: cannot start already-running ORACLE-shut it down first
SQL > shutdown immediate
ORA-01507: database not mounted
ORACLE instance shut down.
SQL > startup nomount
ORACLE instance started.
Total System Global Area 603979776 bytes
Fixed Size 1220796 bytes
Variable Size 180358980 bytes
Database Buffers 415236096 bytes
Redo Buffers 7163904 bytes
SQL > alter database mount
Database altered.
Declare
Devtype varchar2 (256)
Done boolean
Begin
Devtype:=sys.dbms_backup_restore.deviceallocate (type= >'', ident= > 't1')
Sys.dbms_backup_restore.restoresetarchivedlog (destination= >'/ orahome/flash_recovery_area/MYDATA/archivelog')
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 3)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 4)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 5)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 6)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 7)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 8)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 9)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 10)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 11)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 12)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 13)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 14)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 15)
Sys.dbms_backup_restore.restorearchivedlog (thread= > 1 sequence = > 16)
Sys.dbms_backup_restore.restorebackuppiece (done= > done,handle= >'/ orahome/flash_recovery_area/MYDATA/backupset/2011_08_15/o1_mf_nnndf_TAG20110815T132445_74kcdxvn_.bkp')
Sys.dbms_backup_restore.devicedeallocate
End
/
SQL > alter database open
Alter database open
*
ERROR at line 1:
ORA-01589: must use RESETLOGS or NORESETLOGS option for database open
Use controlfile to restore the database
SQL > recover database until cancel using backup controlfile
ORA-00279: change 1223908 generated at 08/15/2011 13:24:45 needed for thread 1
ORA-00289: suggestion:
/ orahome/flash_recovery_area/MYDATA/archivelog/2011_08_15/o1_mf_1_16_%u_.arc
ORA-00280: change 1223908 for thread 1 is in sequence # 16
Specify log: {= suggested | filename | AUTO | CANCEL}
Auto
ORA-00279: change 1225044 generated at 08/15/2011 13:56:30 needed for thread 1
ORA-00289: suggestion:
/ orahome/flash_recovery_area/MYDATA/archivelog/2011_08_15/o1_mf_1_17_%u_.arc
ORA-00280: change 1225044 for thread 1 is in sequence # 17
ORA-00278: log file
'/ orahome/flash_recovery_area/MYDATA/archivelog/1_16_758221587.dbf' no longer
Needed for this recovery
ORA-00308: cannot open archived log
'/ orahome/flash_recovery_area/MYDATA/archivelog/2011_08_15/o1_mf_1_17_%u_.arc'
ORA-27037: unable to obtain file status
Linux Error: 2: No such file or directory
Additional information: 3
Resetlog opens the database
SQL > alter database open resetlogs
Database altered.
SQL >
The above is how to call dbms_backup_restore to restore the database, the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.
