Taking daily rman backup of archivelogs

Hi,
Technical info:
OS: Windows 2003 EE
DB: Oracle 10g EE v. 10.2.0.3
DB size: 30 GB
I need help to create a rman script or suggestions for creating a Job in Grid Control.
I want to take a daily (monday to friday) rman backup of archivelogs in the time interval 9 AM to 5 PM. The script should be run every 2 hours. I want the script to remove the archivelogs that are older than 4 days. The retention policy is 9 days.
Any suggestions will be very much appreciated.

Hi,
Yes, I have realized that I can create different jobs in Grid Control one for each day and each time: for example: at 9 AM, 11 AM, etc until 5 PM.
Each job performs a backup archivelog and removes those backups that are older than 4 days.
But I have to create 25 jobs (5 jobs for each day).
Is there a simpler way to achieve the same result?

Similar Messages

Rman backup with archivelog from tape

Hi,
We are doing a level 0 backup on sunday and then level1 backup on all the weekdays.
The archive logs generated are 1GB each and are more in number.
IF we include archivelog in level1 backup , its taking around 12hrs to complete.
So we are thinking of not including the archivelog in level 1 backup,but then we can daily move the archive logs to another location .
So archivelogs will not be in the rman backup.
So in case of restore, how can we apply the archive logs required? rman will not identify the archive logs...how can we manually apply the required archive logs
Please help

Information about ArchiveLogs is available in the controlfile as I outlined in my response post in the thread How to find out which archived logs needed to recover a hot backup?
However, if your CONTROLFILE_RECORD_KEEP_TIME is 7 days and you are attempting a restore of a backup 14 days or 28 days or 35 days old ... you may be out of luck.
You'd need to maintain a listing of ArchiveLogs in some manner (e.g. a log file outside the database that you periodically update with information about ArchiveLogs).
It is much better to also backup the ArchiveLogs using RMAN. Don't forget to ensure that controlfile backups or autobackups are also taken and retained.
Hemant K Chitale

RMAN backup with archivelogs.

Dear all,
Can i delete all archivels after the RMAN backup. Why do we backup archivelogs with RMAN backup. I think it is useless.
Please can somebody explane this.
Regards
upul indika

Why do we backup archivelogs with RMAN backup. I
think it is useless. You think backing up archivelogs is useless ? Did you ever recover a database ? Did you ever simulate a disaster recovery ? If yes, how did you do it ? If not, then you should have a look at the documentation
Anyway, you can (or even you should) delete archivelogs after the RMAN backup.

Got RMAN error when running RMAN backup of archivelogs on physical standby database

Got below error when running RMAN backup of datafiles and archivelogs on physical standby database.
RMAN-06820: WARNING: failed to archive current log at primary database
ORACLE error from target database:
ORA-17629: Cannot connect to the remote database server
ORA-17627: ORA-00942: table or view does not exist
Could anyone help me? Thanks,

Hello;
When you connect RMAN to the source database as TARGET you must specify a password even if RMAN uses operating system authentication.
So the errors ORA-17627 and ORA-00942 appear to be cause and effect.
What version of Oracle? ( 11.2.0.4 according to the tag )
Can you post your backup script?
Best Regards
mseberg
Update
According to :
Database Error Messages 11g Release 2 (11.2) E17766-03
RMAN-06820: WARNING: failed to archive current log at primary database
Cause: An attempt to switch the archived log at the primary database failed.
So I would check my Primary alert log for an issue.
Message was edited by: mseberg

Rman backup of archivelog when an old archive is missing

When i run the command as follows
backup archivelog all ;
It gives me following error
error identifying file <filepath>
unable to open file
unable to open file
(OS 3) The system cannot find the path specified.
How to continue backing up the rest of archives?????

816669 wrote:
When i run the command as follows
backup archivelog all ;
It gives me following error
error identifying file <filepath>
unable to open file
unable to open file
(OS 3) The system cannot find the path specified.
How to continue backing up the rest of archives?????I'd say that you start by taking a new full-backup (probably using RMAN), so that you can recover in the event of a failure. Then, you can do as so many before me have suggested, copy 'n paste the error message here, so that we can help you.
Brgds
Johan

RMAN backup with archivelog (pros/cons)

When performing a "backup database with archivelogs" where does rman store the info contained in the archive logs. If I do a backup like this do I still need to keep the archive logs out on disk? Does this increase time to do backups? I have some production databases that are close to 500gb. Wondering what the pros/cons are doing a backup this way.
Thanks All!

user10784896 wrote:
When performing a "backup database with archivelogs" where does rman store the info contained in the archive logs. The info stored in the archive logs (what you asked about, but probably not what you meant) is stored in the archive logs. The backups of those logs are stored in a backup set. The information about the logs is stored in the control file.
If I do a backup like this do I still need to keep the archive logs out on disk?
You have backed them up, right? Archivelogs are not actively used by the running database, right? If you don't delete them after they are backed up, let me know who you buy your disk storage solutions from, as I'd like to buy stock in that company.
Does this increase time to do backups? Anything you do "increases time to do" vs. not doing something. (The most efficient SELECT statement is the one not executed). The question is does this have a practical, measurable degradation of performance that is intolerable to my organization? The answer undoubtedly "no".
I have some production databases that are close to 500gb. Wondering what the pros/cons are doing a backup this way.
Pros are you can recover your database.
Cons are, you can't recover your database.
And it looks like we need to point out that the housekeeping of your archivelogs can and should be handled by rman, not outside of it. Look at "backup archivelog not backed up n times" and "delete archivelog backed up n times", and other variations of 'backup archivelog' and 'delete archivelog'.
>
Thanks All!

RMAN backup (no archivelogs) - undo tbsp issues

Hi guys,
Today I tried an inconsistent clone (from production to test DB) but it complained about the undo tablespace. Full message was:
Oracle Error:
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01194: file 2 needs more recovery to be consistent
ORA-01110: data file 2: '/ora/PPAHED01/data01/PPAHED01/datafile/undotbs1.dbf'
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of Duplicate Db command at 01/10/2013 15:40:17
RMAN-03015: error occurred in stored script Memory Script
RMAN-06053: unable to perform media recovery because of missing log
RMAN-06025: no backup of log thread 2 seq 65710 lowscn 133872228360 found to restore
RMAN-06025: no backup of log thread 2 seq 65709 lowscn 133872193688 found to restore
RMAN-06025: no backup of log thread 1 seq 189087 lowscn 133872228359 found to restore
RMAN-06025: no backup of log thread 1 seq 189086 lowscn 133872226828 found to restore
RMAN-06025: no backup of log thread 1 seq 189085 lowscn 133872194295 found to restoreThe backup was of the control file and a full backup but there's an issue with the undo.
Can this issue be fixed by just removing the undo tablespace completely then creating one in mount? Or do I have to do lots of steps like here: http://sysinfo.bascomp.org/oracle/troubleshooting-for-startup-inconsistent-db/
I've not seen this issue when cloning before (although that was cloning an unused DB).
Mike

damorgan wrote:
To answer your question you can probably just create the UNDO tablespace ... no harm in trying.
But there is substantial harm in running a production system, as you are doing, and not being in archive log mode.
Unless your production database is a toy holding nothing more important than your mother's cookie recipes I highly recommend you don't even take the time to blink your eyes before you enable archive logging: What you have is the moral equivalent to performing surgery without first washing your hands.The production system is in archivelog mode, I just didnt want to FTP the log files over too as it doesn't have to be a completely recent backup. It doesn't even have to be from the last month.
Mike

ORA-12514 Error, While taking offline Rman backup

Hi Experts,
I have scheduled Rman offline backup job. Scheduled the following commands to run in a batch file(Win 2003 server)
I am getting the below error.
When we use shut down abort, do we need to restart the Listener?
Please help me on this issue.
I am using oracle 10.2.0.4.0 on Windows 2003 server
Shutdown Abort;
Startup Mount;
SQL 'Alter System Enable Restricted Session';
SQL 'Alter Database Open';
Shutdown Immediate;
Startup Mount;
Backup database;
Backup Current controlfile;
SQL 'Alter Database Open';
SQL 'Alter System Disable Restricted Session';
SQL 'Create Pfile from Spfile';
Exit;
Recovery Manager: Release 10.2.0.4.0 - Production on Tue Mar 3 03:12:56 2009
Copyright (c) 1982, 2007, Oracle. All rights reserved.
connected to target database: xxxxx(DBID=524614998)
using target database control file instead of recovery catalog
RMAN> Shutdown Abort;
2> Startup Mount;
3> SQL 'Alter System Enable Restricted Session';
4> SQL 'Alter Database Open';
5> Shutdown Immediate;
6> Startup Mount;
7> Backup database;
8> Backup Current controlfile;
9> SQL 'Alter Database Open';
10> SQL 'Alter System Disable Restricted Session';
11> SQL 'Create Pfile from Spfile';
12> Exit;
Oracle instance shut down
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of startup command at 03/03/2009 03:13:01
ORA-12514: TNS:listener does not currently know of service requested in connect descriptor
Recovery Manager complete.

NAME TYPE VALUE
Thanks for the quick reply, Please see below for service_names, listener services and Listener.ora file content.
service_names string QASQL2
C:\>lsnrctl services
LSNRCTL for 64-bit Windows: Version 10.2.0.4.0 - Production on 03-MAR-2009 05:02:26
Copyright (c) 1991, 2007, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxxqasql2.domain.abcd-xyz.com)(PORT=1521)))
Services Summary...
Service "PLSExtProc" has 1 instance(s).
Instance "PLSExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
Service "QASQL2XDB" has 1 instance(s).
Instance "qasql2", status READY, has 1 handler(s) for this service...
Handler(s):
"D000" established:0 refused:0 current:0 max:1002 state:ready
DISPATCHER <machine: xxxQASQL2, pid: 5240>
(ADDRESS=(PROTOCOL=tcp)(HOST=xxxqasql2.domain.abcd-xyz.com)(PORT=2528
Service "QASQL2_XPT" has 1 instance(s).
Instance "qasql2", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:17 refused:0 state:ready
LOCAL SERVER
Service "qasql2" has 1 instance(s).
Instance "qasql2", status READY, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:17 refused:0 state:ready
LOCAL SERVER
The command completed successfully
C:\>
***********Listener.ora file
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = PLSExtProc)
(ORACLE_HOME = c:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
LISTENER =
(DESCRIPTION_LIST =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = xxxqasql2.domain.abcd-xyz.com)(PORT = 1521))
(ADDRESS = (PROTOCOL = TCPS)(HOST = xxxqasql2.domain.abcd-xyz.com)(PORT = 2484))
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC0))
Thanks

Rman backup errors..

hi guru's
please tell me the answeres..for this
what will happen if we re run the Rman backup due to the job failure...will take a new backup from the begining? or will start from the first backup end where it left ?
i am deleting some archieved logs on the archieved destination before takeing the RMAN backup, and then running rman backup ...then any error will raised for the missing files during Rman archive log backup for missing files? i have the files like 1 to 10 ...in that 5 and 6 logs are deleted before takeing the Rman backup..how to resolve this?

user13014926 wrote:
hi guru's
please tell me the answeres..for this
what will happen if we re run the Rman backup due to the job failure...will take a new backup from the begining? or will start from the first backup end where it left ?
You can continue backup from which files not backed up and this is call restartable backup.Please refer below link
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14191/rcmconc1.htm#i1008543
>
i am deleting some archieved logs on the archieved destination before takeing the RMAN backup, and then running rman backup ...then any error will raised for the missing files during Rman archive log backup for missing files? i have the files like 1 to 10 ...in that 5 and 6 logs are deleted before takeing the Rman backup..how to resolve this?If you manually delete archivelogs then you will get an error so before executing this backup command you have to execute CROSSCHECK ARCHIVELOG ALL and DELETE EXPIRED ARCHIVELOG ALL then your problem will solve.

Rman backup error

Hi,
I am taking the rman backup i got below error please give me the solution.
Starting backup at 13-DEC-12
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=33 devtype=DISK
allocated channel: ORA_DISK_2
channel ORA_DISK_2: sid=50 devtype=DISK
channel ORA_DISK_1: starting full datafile backupset
channel ORA_DISK_1: specifying datafile(s) in backupset
input datafile fno=00001 name=/u01/oracle/oradata/dev/system01.dbf
input datafile fno=00002 name=/u01/oracle/oradata/dev/undotbs01.dbf
channel ORA_DISK_1: starting piece 1 at 13-DEC-12
channel ORA_DISK_2: starting full datafile backupset
channel ORA_DISK_2: specifying datafile(s) in backupset
input datafile fno=00003 name=/u01/oracle/oradata/dev/sysaux01.dbf
channel ORA_DISK_2: starting piece 1 at 13-DEC-12
RMAN-03009: failure of backup command on ORA_DISK_1 channel at 12/13/2012 12:05:14
ORA-19504: failed to create file "/u03/rmbackp/1gnsomrp_1_1"
ORA-27040: file create error, unable to create file
Linux Error: 2: No such file or directory
channel ORA_DISK_1 disabled, job failed on it will be run on another channel
my mount point has 777 oracle:dba /u03/rmbackup . Below is the my rman configuration parameters.
CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
CONFIGURE CONTROLFILE AUTOBACKUP OFF;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/u03/rmbackup/%F';
CONFIGURE DEVICE TYPE DISK PARALLELISM 2 BACKUP TYPE TO BACKUPSET;
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1;
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1;
CONFIGURE CHANNEL 1 DEVICE TYPE DISK FORMAT'/u03/rmbackp/%U';
CONFIGURE MAXSETSIZE TO UNLIMITED;
CONFIGURE ENCRYPTION FOR DATABASE OFF;
CONFIGURE ENCRYPTION ALGORITHM 'AES128';
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO'/u03/rmbackup/snapcf_dev.f';
CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
CONFIGURE CONTROLFILE AUTOBACKUP OFF;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/u03/rmbackup/%F';
CONFIGURE DEVICE TYPE DISK PARALLELISM 2 BACKUP TYPE TO BACKUPSET;
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1;
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1;
CONFIGURE CHANNEL 1 DEVICE TYPE DISK FORMAT'/u03/rmbackp/%U';
CONFIGURE MAXSETSIZE TO UNLIMITED;
CONFIGURE ENCRYPTION FOR DATABASE OFF;
CONFIGURE ENCRYPTION ALGORITHM 'AES128';
CONFIGURE ARCHIVELOG DELETION POLICY TO NONE;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO'/u03/rmbackup/snapcf_dev.f';

Did you see error :
ORA-19504: failed to create file "/u03/rmbackp/1gnsomrp_1_1"
ORA-27040: file create error, unable to create file
Linux Error: 2: No such file or directoryThere haven't directory : /u03/rmbackp and Channel 1 device type disk format is showed : /u03/rmbackp/%U
Error there.
Mahir

RMAN backup deletion by BP key

Hello,
We are having 2 node 11g RAC (ASM) cluster & had set up one ASM disk as FRA on which daily rman backup is performed now as FRA is running out of space we are required to backup FRA so I backup FRA using backup recovery area; now after that all my backups in list backupset summary command are coming as below
Key TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
263 B F A * 28-MAR-11 1 2 YES BACKUP_PRODAILY_032811100000
264 B F A * 28-MAR-11 1 2 YES BACKUP_PRODAILY_032811100000
265 B F A * 28-MAR-11 1 2 YES BACKUP_PRODAILY_032811100000
& for each backup peice I am having two copies one on tape & other on FRA so now I want to remove one copy of every peice i.e FRA's one so taht FRA can be empty, Please tell me how can I delete one copy of each backupset as both copies are having same backupset set but hav different BP KEY as below
RMAN> list backupset 263;
List of Backup Sets
===================
BS Key Type LV Size
263 Full 1001.36M
List of Datafiles in backup set 263
File LV Type Ckp SCN Ckp Time Name
10 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/system.278.742062987
12 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/undotbs1.258.742063665
15 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/apps_ts_media.271.742062841
18 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/apps_ts_queues.285.742063093
27 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/apps_ts_tx_idx.259.742062485
29 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/apps_ts_tx_idx.266.742062695
30 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/ctxd.295.742063149
42 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/apps_ts_media.327.742654423
50 Full 124174871 28-MAR-11 +DATAPROD/prod/datafile/xxmpcd_ts_tx_idx.336.742838847
Backup Set Copy #1 of backup set 263
Device Type Elapsed Time Completion Time Compressed Tag
DISK 00:07:47 28-MAR-11 YES BACKUP_PRODAILY_032811100000
List of Backup Pieces for backup set 263 Copy #1
BP Key Pc# Status Piece Name
651 1 AVAILABLE +FRAPROD/prod/backupset/2011_03_28/nnndf0_backup_prodaily_032811100000_0.393.747007719
Backup Set Copy #2 of backup set 263
Device Type Elapsed Time Completion Time Compressed Tag
SBT_TAPE 00:07:47 25-APR-11 YES BACKUP_PRODAILY_032811100000
List of Backup Pieces for backup set 263 Copy #2
BP Key Pc# Status Media Piece Name
1036 1 AVAILABLE 3764a8c0:4daeb8e0:06c8:0001 FRA_BKP<PROD_361:747007718:1>.dbf
So please tell me how can I remove just one copy so that FRA can be empty.
Thanks & Regards
Saransh Soni

Maybe you may set retention policy to 1,
RMAN> CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
End after taking a backup, you issue the following command so previous backup will be deleted:
RMAN> DELETE OBSOLETE;
Regards
Gokhan

Undo tablespace recovery from RMAN backup

Hi,
Lets's assume we have RMAN backup and archivelog backups, and now
my undo tablespace's disk crashed ,how can i recover?
Can i recover while database is up?
Thanks,
Kumar.

to recover UNDO tablespace from RMAN backup you must shutdown the database and start it in the MOUNT state to recover the missing files as follows
rman target /
RUN
STARTUP MOUNT;
ALLOCATE CHANNEL ch3 TYPE Disk;
RESTORE datafile 'c:\u01\prod3\undo01.dbf';
RECOVER datafile 'c:\u01\prod3\undo01.dbf';
ALTER DATABASE OPEN;
RELEASE CHANNEL ch3;
hope this will help you

Daily export backup (via datapump) of a 600GB production database

Hi Guys,
I have a 600GB DB.
10G Database.
Currently I have daily rman backup to tape.
Based on your experience, should i bother to perform a daily export of production database of such size?
Do u think it's useful?
thanks

Fran wrote:
All depends, what do you want to do? Do you have enough space to save a backup and export daily?
In my opinion with one backup is enough to save your database. I'm sorry, I can't agree with that. I've been in situations where the first, second and THIRD backup sources have been unavailable in the event of a Production restore. I had to go to Plan D and cross my fingers (and sweat a lot). That might be overkill, but you should never rely on just one backup method/source for Production data.
Not only that, but, obviously, you can also use an export of the data and import into another database or a schema inside the database in case you need to address any logical corruption. We also use the exports to refresh test databases.
We have many similar sizes of databases and we take exports weekly, instead of daily. An export will be an incomplete backup, obviously, though you can ensure consistency by giving it an SCN to use as a datapoint. You can also run Data Pump in parallel which does speed things up.
If you use it as part of your backup strategy, I'd make sure I had regular backups of the parameter file and the controlfiles (both binary and trace). I'd also make sure I had regular txt files showing the necessary information for the tablespaces and the datafiles which you can use to recreate the files in case you needed to.
Mark

Error while run rman backu plus archivelog to tape

hi all,
am trying to run rman backup plus archivelog TO tape disk
my rman configuration settings are as seen below
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 2;
CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COPY PARALLELISM 1;
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/dev/nst0/%u';
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 '/oracle/Ora10R2/Orahome/dbs/snapcf_dse.f
'; # default
get the following error when i do this,
RMAN-03009: failure of backup command on C3 channel at 01/03/2013 11:33:45
ORA-00600: internal error code, arguments: [ksfdfetch1], [], [], [], [], [], [],
Can any one tell why am getting this error?
Thanks

Hi,
ora-600s are very strange errors, and most times difficult to understand.
there are however some useful notes.
ORA-600/ORA-7445/ORA-700 Error Look-up Tool [Article ID 153788.1]
Master Note for Diagnosing ORA-600 [Article ID 1092832.1]
besides that, you could inform us of the platform, OS, DB version that you are using.
br,
jpinela.

Restoring RMAN backup

Hi everyone,
We have the oracle servers version
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
One is the production server and one is for testing. We are taking incremental RMAN backup in the production server. I need to restore that backup to the testing server from production server once in 3 days. The DB name is same for both database.
Plese anyone explain me about how to acheive this..
With thanks & Regards,
Jai.

if you would like also refer,
http://www.akadia.com/services/ora_duplicate_database_rman.html
http://gavinsoorma.com/recovery-scenarios/
video tutorial
http://kamranagayev.wordpress.com/2010/06/25/rman-video-tutorial-series-creating-duplicate-and-standby-database-using-rman/

Taking daily rman backup of archivelogs

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