Recover datafile using cold backup in archivelog mode

Hi,
I have lost one of my datafiles i.e New.dbf from the disk. I have full database cold backup of last sunday. Also I have the archives. Is it possible to restore and recover only the lost datafile? Please help.

If you used RMAN to create the backup, then use RMAN again to restore that one datafile alone (RESTORE DATAFILE n) and then recover it (RECOVER DATAFILE n).
If you didn't use RMAN but you are sure that the backup was a COLD Backup, manually restore the datafile and then issue a RECOVER DATAFILE n from the SQLPlus command.
In either case you must ensure that the datafile is OFFLINE before you restore the file -- or take it OFFLINE with ALTER DATABASE DATAFILE n OFFLINE IMMEDIATE before doing the restore.
After the RECOVER is completed, you must bring it ONLINE with an ALTER DATABASE DATAFILE n ONLINE
Hemant K Chitale
http://hemantoracledba.blogspot.com

Similar Messages

Recover database using cold backup

Hi All,
One of the table is delete by one of our DBA from PROD accidentally. We have a cold backup on one day before.
Now we are trying to restore it from the cold backup. PROD DB is in archivelog and all the archive is in tact.
The table got truncated today at 8 PM. Can we apply the database till 8 PM so that we can restore the truncated table using cold backup.
Please find the below steps which we are using to restore.
creating controlfile
starting the db in mount state
recover database;
Will it ask for latest archive log when we try to recover it.
ENV details -
DB - 11.2.0.1
Please suggest.
Thanks

Hi,
If you have doubts about the procedure to use to restore a backup to a point in time, then please take a look at the documentation first: Performing Flashback and Database Point-in-Time Recovery - 11g Release 2 (11.2)
After you specify the time when the recovery must end (UNTIL clause in rman), then the RECOVER command will try to use the archivelogs needed.
Before starting with this PITR operation, you should check if your database has flashback active, because it will be much easier to recover using it.
This is also explained on the same document linked above.
Regards.
Nelson

Recover database from cold backup and add ol archivelogs....

Hello!
Scenarion : I have create in 1 january cold backup of my database. I have from 1 to 4 January all archive logs generated by my database. My database gone in 4 January.
Solution question : How can i restore database using cold backup a than add info from archivelogs to recovered database to do database consist from disaster day.
Regards... Marcin

1. Kill current instance with SHUTDOWN ABORT.
2. Copy all control files and data files from your cold backup to original destination.
3. Make sure all archived redo logs from 01-JAN to 04-JAN are available in the database archive destination (LOG_ARCHIVE_DEST or LOG_ARCHIVE_DEST_x).
4. Run as SYSDBA:
startup mount
recover database using backup controlfile until cancel;When prompted for something like
ORA-00279: change 864868 generated at 01/14/2010 09:30:10 needed for thread 1
ORA-00289: suggestion :
C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2010_01_15\O1_MF_1_22_%
U_.ARC
ORA-00280: change 864868 for thread 1 is in sequence #22enter:
AUTOWhen you get something like:
ORA-00308: cannot open archived log
'C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2010_01_15\O1_MF_1_29_
%U_.ARC'
ORA-27041: unable to open file
OSD-04002: ouverture impossible du fichier
O/S-Error: (OS 2) Le fichier spécifié est introuvable.run
alter database open resetlogs;

Urgent help : Need to recover a database without backup and archivelogs

Hi,
We are in urgent need to recover a database without backup and archivelogs
one datafile seems corrupted
SQL> recover automatic database until cancel using BACKUP CONTROLFILE;
ORA-00279: change 10527325422479 generated at 07/27/2011 03:13:04 needed for
thread 1
ORA-00289: suggestion : /pys/u5/oradata/PYS/PYSarch/arch0001.0000181845.arc
ORA-00280: change 10527325422479 for thread 1 is in sequence #181845
ORA-00278: log file '/pys/u5/oradata/PYS/PYSarch/arch0001.0000181845.arc' no
longer needed for this recovery
ORA-00308: cannot open archived log
'/pys/u5/oradata/PYS/PYSarch/arch0001.0000181845.arc'
ORA-27037: unable to obtain file status
HP-UX Error: 2: No such file or directory
Additional information: 3
Specify log: {<RET>=suggested | filename | AUTO | CANCEL}
CANCEL
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01152: file 1 was not restored from a sufficiently old backup
ORA-01110: data file 1: '/pys/u2/oradata/PYS/pay_system_01.dbf'

N Gasparotto wrote:
bsac14 wrote:
my database is in no archive mode
can you please tell how to restore
yes it is a datafile corruptionYou did not say how you defined that's a datafile corruption. You provide minimum to zero information.
I just need to bring the database up,no need any exact data
I can refresh from prod laterThen drop and recreate database. Basically and since you are not in archive mode, no recover is possible. Period.
Nicolas.Hi,
How did you come to the conclusion that your datafile is corrupted? Can you provide and supported logs?
Regards .....

Build standby database using cold backup on a different file system & host

Hi gurus,
The database version is 11.2.0.3. OS is HP UX Itanium 11.31
I am building a standby database using cold backup of primary. The primary mount points are (/p003/oracle, /p004/oracle) on HOST1 and the standby file system on HOST2 are (/s003/oracle,/s004/oracle). I am not using Data Guard to apply logs as we have a script that mounts the log location periodically to standby server and apply the logs to make it current. I am using cold backup as the database is small like 200G and can be taken down. Could someone help me with the steps to build standby using cold backup for a different file location in standby ?? My concern is I can copy the data files from /p003 to /s003. How will I build the controlfile ?
If it was same File system on both HOST 1 and HOST2 I can copy the cold backup to the standby server, build a standby control file on primary and copy and replace the standby control file and everything was set.
Thanks
Cherrish Vaidiyan

Hello;
I have a note on this using a cold copy of the current files instead of a copy backup :
http://www.visi.com/~mseberg/data_guard_on_oracle_10_step_by_step.html
I will post SCP SQL in a moment.
Best Regards
mseberg
set heading off
set feedback off
set pagesize 100
set linesize 400
select 'scp '||a.name ||' server_name:' || a.name as newname from v$datafile a;
select 'scp '||a.name ||' server_name:' || a.name as newname from v$controlfile a;
select 'scp '||a.member ||' server_name:' || a.member as newname from v$logfile a;Edited by: mseberg on May 25, 2013 10:35 AM

Upgrade 10.2 to 11.2 manualy using cold backup copy on new server.

Hi,
I am going to manually upgrade my databases to 11.2 from 10.2. I will use cold backup of 10.2 and copy in to the new server Red Hat Linux 5.
I got a Note (742108.1) done for upto 10.2.0.5 and it tells to set
orapwd file=$oracle_HOME/dbs/orapw<SID>
But my upgrade path is 10.2 to 11.2 and i would like to verify whether i need to do the same before startup in upgrade mode?? Nothing mention regarding this in Upgrade Guideline. Just telling only to copy password file to $oracle_HOME/dbs/
if so how i set it ? i mean in $ prompt or SQL Prompt?

I have 10 databases in one server and 2 seperate servers. I will do 3 changes mainly 32 bit to 64 bit, Suse Linux 9 to red Hat Linux 5 and 10.2.0.4 to 11.2.0.1
So best path to do all at once is cold backup and i verified it from oracle Support as well. because 32 bit o 64 bit conversion will automatically happend when upgrade.
My databses are nearly 300GB each and not much big . use for datawarehouse.

Recover datafile using redolog file

Hi all,
please let me know if we can recover datafile using redolog file.
As my database has no archive log mode ON.
Thanks and Regards

Hi,
For your information: NOARCHIVELOG mode protects a database only from instance failure, not from media failure.
http://www.utexas.edu/its/unix/reference/oracledocs/v92/B10501_01/server.920/a96519/intro.htm#1005025
Cheers

Plz provide me some documents on how to clone a database using cold backup

Dear All,
Please provide me some documents on how to clone a database using cold backup which is in archive log.
Also, please can you provide me the document to install Oracle 9.2.0.6 on Aix 5L
Thanks,
Mahipal

Please provide me some documents on how to clone a database using cold >backup which is in archive loghttp://www.oracle-base.com/articles/9i/DuplicateDatabaseUsingRMAN9i.php
please can you provide me the document to install Oracle 9.2.0.6 on Aix 5L
Oracle9i Installation Guide
Release 2 (9.2.0.1.0) for UNIX Systems: AIX-Based Systems, Compaq Tru64 UNIX, HP 9000 Series HP-UX, Linux Intel, and Sun Solaris -
http://download.oracle.com/docs/html/A96167_01/toc.htm

Create database using datafiles from cold backup

hi,
I've been given a bunch of datafiles from a cold backup.
I have created my own database using the same DB_NAME as the original.
I now want to be able to attach these datafiles to my database. How do I go about? Do I need to start the database in mount mode so that the control file is open, then start adding these datafiles to the tablespace, and then open the database?
Any help would be appreciated.
Thank you.

OracleGuy777 wrote:
hi,
I've been given a bunch of datafiles from a cold backup.
I have created my own database using the same DB_NAME as the original.
I now want to be able to attach these datafiles to my database. How do I go about? Do I need to start the database in mount mode so that the control file is open, then start adding these datafiles to the tablespace, and then open the database?
Any help would be appreciated.
Thank you.Hi,That is not possible.You actually have two different databases,however db_name is same but every db_name are same databases is not same.These has own DBID in same environment.(Their controlfile and datafile information exactly is different).There is similar way is transportable tablespace feature.You can use this feature to transport tablespace between databases.For more information see below link.
http://download.oracle.com/docs/cd/B19306_01/server.102/b14231/tspaces.htm#i1007169

Recover a database using cold backup

Hi,
I am working in oracle 9i and solaris 5.8. I am taking coldbackup and its stored in another solaris server. I need to create a new database in the backup server using the cold backup files.
Please explain me in detail how to create a database using the files.
SQL QUERY needed.
Gobi.

Hi,
go through below link
Re: Help! How to migrant my whole DBXE to another computer???!!!!!
hope this helps
Taj

Backup in ARCHIVELOG Mode

Dear Sirs,
Actually I've a non archivelog mode RDBMS, but I wan't to make a
hot backup. Could I make a hot backup after I turn the
ARCHIVELOG mode ON, then turn it off again after Back - Up ?
And how do I make the hot backup ?
Thank you for the attention and help.
Regards,
Tonny

You could turn archivelog mode on, do the backup, and then turn
archivelog mode off. This really defeats the purpose of hot
backups though. You would have to know the SCN, archivelog
file, or time to do a point-in-time recovery manually, or if you
are using RMAN knowing the time will help. I think RMAN will
recover until the last archivelog if you don't specify a time or
SCN. Keep in mind that you will lose all the changes since the
last backup if you turn archivelog mode off after the backup and
your database crashes inbetween the next scheduled backup. If
you are going through the trouble for turning archivelog mode on
and then off I would perform a cold backup. You have to
shutdown the database with normal or immediate, mount the
database, turn archvelog mode on/off and then open the
database. So why not just do a cold backup?

Recover a wrong cold backup

Hi, I had a 9i database in NO ARCHIVELOG mode in a W2003 enviromente. OS hard disk was broken with Oracle instalatión and instance was fallen.
After, I can recover all datafiles, redo, controlfiles and parameter file. I´m trying recover database in another server using RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL; command but when Oracle needs the redo file that contain SCN 573 I put the path but nothing ocurr. Then if I put SELECT * FROM V$LOGFILE; I can see that this log file is in INVALIDATED status.
Another way to recover this database?
But first... Is possible recover this database with a no consistent shutdown of the database?
Thanks...

Hi,
NO ARCHIVELOG mode Never go for "NO ARCHIVELOG mode " ..
After, I can recover all datafiles, redo, controlfiles and parameter file. I´m trying recover database in another server using RECOVER DATABASE USING BACKUP CONTROLFILE UNTIL CANCEL; command but when Oracle needs the redo file that contain SCN 573 I put the path but nothing ocurr. Then if I put SELECT * FROM V$LOGFILE; I can see that this log file is in INVALIDATED status.As you database is not consistent - with respect to crash happened you need to cancel and go for resetlogs.
Since, Archive logs are not there as you DB is not supported. So Until the correct and valid online redo logs the recovery happens as per my knowledge.
- Pavan Kumar N

Help required - Recovery of a datafile that is lost in ARCHIVELOG mode

Hi:
This is related to Oracle 10G on windows 2003 Enterprise, and it is running on ARCHIVELOG mode.
The datafile 'C:\oracle\product\10.2.0\orcl\example01.dbf is lost. Most probably when I took a manual backup i missed it.
I am not using rman rather manual backup and restore.
I mounted the database (obviously it cannot be open since it is not finding the datafile) and took the datafile offline.
I cannot take a tablespace "example" offline in mount stage.
I tried "ALTER DATABASE CREATE DATAFILE <old path / old name> AS <old path / old name>.
Oracle is not allowing saying that the file is read-only.
I altere the database open and took the tablespace offline immediate and then tried the "ALTER DATABASE CREATE DATAFILE <old path / old name> AS <old path / old name>" command. But no luck.
_Please provide some steps so that I can bring it back._ I am looking many sites but everywhere is RMAN.
Thanks in advance - Caesar

>
I am looking many sites but everywhere is RMAN.
>
Yes and for a good reason. For example, RMAN would not have forgotten to backup this datafile :-)
Regardless, you messed it up. Look at DBA_TABLES for the owner & tables that resided in that example tablespace. Probably, it was just our demo schemas. You can recreate them without having to recover then. Look at
http://download.oracle.com/docs/cd/E11882_01/server.112/e10831/toc.htm
for a guide how to do that.
Also, rethink your refuse of RMAN, I would suggest
Kind regards &
Don't forget to backup the datafile :-)
Uwe Hesse
http://uhesse.wordpress.com

Restoring and Recovering from RMAN cold backup

DB Version: 11gR2
os : Solaris
Before dropping a DB we had taken an RMAN backup of the DB using
RMAN> backup database;We hadn't set a FORMAT (like db_%d_S_%s_P_%p_T_%t) for this DB , so the backups went to ORACLE_HOME/dbs directory. The 2 backup files are
/u02/app/oracle/11.2/db/dbs/01mo9fms_1_1
/u02/app/oracle/11.2/db/dbs/02mo9fnc_1_1 -- spfile and control fileNow we need to recreate this DB on a new server.
In the new server, we've placed the backup files in /u04/backup/rmanbkp .
Since We hadn't set a FORMAT parameter for the original DB which we have dropped what format i will give during restore?
Will RMAN automatically recognize the FORMAT of the backup piece and restore ?
RMAN> run
allocate channel c1 device type disk format 'i_dont_know_the_format';
allocate channel c2 device type disk format 'i_dont_know_the_format';
restore controlfile;
restore database;
}This the SHOW ALL output from the DB we have dropped .
RMAN> show all;
RMAN configuration parameters for database with db_unique_name BRCFTST 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 '%F'; # 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 COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE ; # default
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE; # default
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u02/app/oracle/11.2/db/snapcf_brcftst.f'; # defaultAs you can see we hadn't set the format explicitly , ie. the line
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT is missing

Hi,
Before dropping a DB we had taken an RMAN backup.I hope you were in mount mode.
Will RMAN automatically recognize the FORMAT of the backup piece and restore ?No it won't.
First you have to restore a controlfile in nomount mode with:
restore controlfile from '/u04/backup/rmanbkp /02mo9fnc_1_1';
and do alter database mount.
Than you have to run "catalog start with '/u04/backup/rmanbkp'; " so the instance now knows where to find the pieces.
Now you can run a restore database command.
Than open the database with resetlogs.
Regards,
Tycho

Restore using incremental backup with noarchivelog mode

Hello experts,
We are running SAP on Oracle databse(IN NOARCHIVELOG MODE) for which we are having full offline backup on every sunday and post which incremental backups on rest of the days. We have scenario to do restore db to the state till last friday's incremental backup.
Please let us know the procedure for restoring till that point. If possible using brtools utility(which is SAP specific).
Thank You
Regards,
Venkateshwar

If you do not want to read the whole doc This is the snippet for you.
Recovering a NOARCHIVELOG Database with Incremental Backups
Restoring a database running in NOARCHIVELOG mode is similar to restoring a database in ARCHIVELOG mode. The main differences are:
Only consistent backups can be used in restoring a database in NOARCHIVELOG mode.
Media recovery is not possible because no archived redo logs exist.
You can perform limited recovery of changes to a database running in NOARCHIVELOG mode by applying incremental backups. The incremental backups must be consistent, like all backups of a database run in NOARCHIVELOG mode, so you cannot make backups of the database when it is open.
When you are recovering a NOARCHIVELOG database, specify the NOREDO option on the RECOVER command to indicate that RMAN should not attempt to apply archived redo logs. Otherwise, RMAN returns an error.
To recover a NOARCHIVELOG database with incremental backups:
After connecting to the target database and the recovery catalog, place the database in a mounted state:
STARTUP FORCE MOUNT
Restore and recover the database.
For example, you can perform incomplete recovery with the following commands:
RESTORE DATABASE
FROM TAG "consistent_whole_backup";
RECOVER DATABASE NOREDO;
Open the database with the RESETLOGS option.
For example, enter the following command:
ALTER DATABASE OPEN RESETLOGS;

Recover datafile using cold backup in archivelog mode

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