Database cloning using cold backup

Hello Guys,
I am doing cloning of a database from cold backup for testing, actully one datafile has been croupted, so my issue is that, can i exclude tht datafile from controlfile when creating the controlfile and is that poosible that controlfile will created sucessfully and database will open sucessfully.
Please reply.
Thanks

@asif, @ckpt
With humble, how all you know that corrupted datafile is not belonging to system and undo tablespace? If this case, then do you think we can restore that corrupted cold-backup ? Sorry, but this is not the way to just start providing help without asking OP :
1.Current Oracle Version ?
2.Where he want to restore i.e. restoring platform info Oracle version OS ?
3.After cold backup how he came to know that one datafile is corrupted ?
4.When and how datafile became corrupted ?
5.How he taken cold backup ? Was db running fine just before shut immediate for cold backing ?
6.What he has done so far to restore the cold backup ?
7.What error he is getting right now ?
Here problem is corrupted datafile. So, first let come problem clear from OP, ask all missing question in one go, and then start helping is the right way... (my personal opinion, may be wrong!).
Regards
Girish Sharma

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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;
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Recover database using cold backup

Hi All,
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Database Restore from COLD Backup

Dear all,
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WARNING! Recovering data file 2 from a fuzzy backup. It might be an online
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WARNING! Recovering data file 3 from a fuzzy backup. It might be an online
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WARNING! Recovering data file 5 from a fuzzy backup. It might be an online
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WARNING! Recovering data file 8 from a fuzzy backup. It might be an online
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Media Recovery Log
Could someone explain to me what i did wrong?
Thank you
ORA-01113
ORA-01110
ORA-00600: internal error code, arguments: [4194], [52], [52], [], [], [], [], []

Please do not confuse between the backup copies you have. Ensure that you have the latest copy whether cold or hot. If you have COLD copy then simply replace all the data files, redo log files, and the control files and start the database it should start. I do not understand your back up strategy because if you have a Hot backup then why do you need a cold backup. Please let me know in what mode your database is running?
Regards,
DJ

How to reduce the cloning time if using cold backup?

Hi,
We are using EBS r12 (12.0.6) with database 10.2.0.3 in Linux Redhat 4 32-bit envoirnment.
Our datbase size is around 480 GB and we are facing the issues to provide the clone to my consultants for meet the target timelines in given time.
(Source:)---- Production Dell R900 Server machine having 32-GB RAM and 8 Quard Core CPU's.
(Target:)---- Clone Dell 2950 Server machine having 16-GB RAM and 4-Quard Core CPU's.
Currectly we are taking cold backup like:
1: Auto shutdown EBS r12 database nighthy at 12:00 AM daily and compress the backup using tar utility in linux. This process takes 6:00 hours aprox:
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3: And performe standard cloning steps.
Questions:
1: How to reduce time of this backup process?
3: Is there any other way to reduce the cloning process.
2: What type of backup oracle recommended to their customers for this type of process?
Thanks.

1: How to reduce time of this backup process?Without using third party tools, it might be hard to tune the timing of compressing/uncompressing the file.
Have you tried to use scp command? This would help if your network throughput is acceptable.
3: Is there any other way to reduce the cloning process.Since the main issue you have with the copy, then you might copy the files remotely from the source to the target, or using any other storage/backup tools (like file system snapshot).
2: What type of backup oracle recommended to their customers for this type of process?Oracle does not recommend any type of backup as the tools used are not Oracle products.
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Hussein

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lik

That's OK. If you don't use RMAN to clone your database. You can create a database just using the cold backup of the primary database simply.
Important things are
1) you must catalog all datafiles as image copy level 0 in the cloned database
RMAN> connect catalog rman/rman@rcvcat (in host 1)
RMAN> connect target sys/manager@clonedb (in host 2)
RMAN> catalog datafilecopy
'/oracle/oradata/CLONE/datafile/abc.dbf',
'/oracle/oradata/CLONE/datafile/def.dbf',
'/oracle/oradata/CLONE/datafile/ghi.dbf'
level 0 tag 'CLONE';
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RMAN> connect catalog rman/rman@rcvcat (in host 1)
RMAN> connect target sys/manager@prod (in host 3)
RMAN> backup incremental level 1 tag 'CLONE' for recover of copy with tag 'CLONE' database format '/backup/%u';
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$ rcp /backup/<incr_backup> /backup/
-- rcp <the loc of a incremental in host 3> <the loc of a incremental in host 2>
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RMAN> connect catalog rman/rman@rcvcat
RMAN> connect target sys/manager@clone
RMAN> recover copy of database with tag 'CLONE';
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Create a standby controlfile using cold backup

Hi All,
We have to setup a DR for a production database.
Here we have the coldbackup which backups all the datafiles and the control file from the production database.
For cloining we generally copy them to another instance and then create controlfile manually. But for setting up as a DR , we would be creating it for standby controlfile.
I tried to google but I am not able to find a way to create a standby controlfile from the existing controlfile cold backup.
OS version solaris 10 , database version 11.2.0.1
Regards
KK
Edited by: Kk on Feb 16, 2012 8:51 AM

Kk wrote:
Hi All,
We have to setup a DR for a production database.
Here we have the coldbackup which backups all the datafiles and the control file from the production database.
For cloining we generally copy them to another instance and then create controlfile manually. But for setting up as a DR , we would be creating it for standby controlfile.
I tried to google but I am not able to find a way to create a standby controlfile from the existing controlfile cold backup.
OS version solaris 10 , database version 11.2.0.1
Regards
KK
Edited by: Kk on Feb 16, 2012 8:51 AMTry as below
My version:
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE    11.2.0.1.0      Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
SQL>1) Taken backup of current controlfile
2) Deleted Current controlfiles
3) Restored using standby clause from current controlfile
4) Mounted & now controlfile type is Standby
Try in this way when you have cold backup. :)
SQL> select controlfile_type from v$database;
CONTROL
CURRENT
RMAN> run
2> {
3> allocate channel ch1 device type disk format 'c:\oracle\control%U.bkp';
4> backup current controlfile;
5> release channel ch1;
6> }
using target database control file instead of recovery catalog
allocated channel: ch1
channel ch1: SID=63 device type=DISK
Starting backup at 16-FEB-12
channel ch1: starting full datafile backup set
channel ch1: specifying datafile(s) in backup set
including current control file in backup set
channel ch1: starting piece 1 at 16-FEB-12
channel ch1: finished piece 1 at 16-FEB-12
piece handle=C:\ORACLE\CONTROL08N3GEA6_1_1.BKP tag=TAG20120216T230334 comment=NONE
channel ch1: backup set complete, elapsed time: 00:00:01
Finished backup at 16-FEB-12
released channel: ch1
RMAN> exit
RMAN> restore standby controlfile from 'C:\ORACLE\CONTROL08N3GEA6_1_1.BKP';
Starting restore at 16-FEB-12
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=66 device type=DISK
channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:03
output file name=C:\ORACLE\ORADATA\ORCL\CONTROL01.CTL
output file name=C:\ORACLE\FLASH_RECOVERY_AREA\ORCL\CONTROL02.CTL
Finished restore at 16-FEB-12
SQL> alter database mount;
Database altered.
SQL> select controlfile_type from v$database;
CONTROL
STANDBY
SQL>
Some More information:-
Even if your database backup is old, still you can create a new standby controlfile and restore new controlfile and restore database. Later after starting MRP all will be synchronized. No issues
SQL> select controlfile_type from v$database;
CONTROL
CURRENT
SQL> alter database create standby controlfile as 'c:\oracle\control_stby.ctl';
Database altered.
SQL> $dir c:\oracle\con*
Volume in drive C is System
Volume Serial Number is 1853-3E21
Directory of c:\oracle
02/16/2012 11:41 PM         9,748,480 CONTROL_STBY.CTL
               1 File(s)     19,546,112 bytes
               0 Dir(s) 177,185,570,816 bytes free
SQL>Now Just restore database. You already have backup.
Or
If you have opportunity you can go ahead for Duplicate/Duplicate from active database
Edited by: CKPT on Feb 16, 2012 11:41 PM

After the test DB created using cold backup..things to do..

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