Information on unknown rman backup file

Hi,
I have RMAN backup piece, and no information on this RMAN backup piece.
Is there any why to get the this backup piece information like which Oracle Database version the backup was fired on, database SID, backup timing and such.
Please help me out on this.
Regards,
Karthik Chandran

Hello,
You can find some of those information in the name of the files. Most of the time, there is the SID of the database, or the timestamp of the backup. If you have the autobackup of the controlfile, you will have the DBID which will be useful to restore.
You can also try the CATALOG command in RMAN (10g and above) to find the DBID and SID of the database that created the file. The CATALOG command itself will fail if you are not connected to the database that created the backup, but it will return you those information.
Regarding the version, it is hard to tell.
If you have an autobackup of the controlfile (filename begins with CF), then it is 9i or above.
If you have OMF files (Oracle Managed Files) , then it is 10g or above.
Hope this will help.
Regards,

Similar Messages

How to find total size of RMAN backup files?

Hi there
env: Oracle 10gR2, RHEL 64bit
My client has a production database where rman backups are taken: Level-0 backup every Sunday and Level-1 Monday thru Saturday.
I have very limited access to this production database because it is being managed by third party and they won't provide me my required info (not sure why). I do not have access to their rman repository. To connect to the database I have to login to an intermediate server and then login to the database server. I have no access to Enterprise Manager. So in short, my access is limited. I want to gather the information on total size of rman backup files - both for a Level-0 and Level-1 backups separately. I understand that this info can be retrieved from rman repository. Are there any data dictionary views/tables where I may get this info?
Best regards

Hi,
Have you searched in forum check this:https://forums.oracle.com/thread/1097939
HTH

RMAN backup files are still exist since long time, how to delete?

Dear sir;
I'm using the below script to do daily backup, however there are many rman backup files are still exist and consumes HD size, how could I delete these files in daily bases? some files dated in FEB, MAR, APR,
============Daily RMAN script=========
rman target /<<!
backup incremental level=0 as compressed backupset database format '/u15/rman/full_backup_%U.rman';
backup archivelog all not backed up 2 times format '/u15/rman/arc_backup_%U.rman';
backup current controlfile format '/u15/rman/control_%U.rman';
delete archivelog all backed up 2 times to device type disk completed before 'sysdate-7';
delete noprompt obsolete;
================================END
Thanks and best regards
Ali

Hi;
Our backup policy should have 7 days; however we have here some files from JAN, FEB,MAR, APR /2012 WHICH ARE BEYOND THE RETENTION DATE and these files should be deleted by executing " delete noprompt obsolete; ".
All files are exist in /u15/rman/
-rw-r----- 1 oracle oinstall 1151763968 Jan 21 01:36 arc_backup_7kn19h4a_1_1.rman
-rw-r----- 1 oracle oinstall 1136882176 Jan 21 01:36 arc_backup_7ln19h4q_1_1.rman
-rw-r----- 1 oracle oinstall 1135984640 Jan 21 01:36 arc_backup_7mn19h5a_1_1.rman
-rw-r----- 1 oracle oinstall 1126627328 Jan 21 01:37 arc_backup_7nn19h5q_1_1.rman
-rw-r----- 1 oracle oinstall 880606720 Mar 12 02:53 arc_backup_7nn5ldhp_1_1.rman
-rw-r----- 1 oracle oinstall 1093043712 Jan 21 01:37 arc_backup_7on19h6a_1_1.rman
-rw-r----- 1 oracle oinstall 9797632 Dec 15 01:04 control_04mu7tcp_1_1.rman
-rw-r----- 1 oracle oinstall 36896768 Mar 3 02:55 control_4cn4tm9k_1_1.rman
-rw-r----- 1 oracle oinstall 36896768 Mar 4 02:53 control_4on50ahm_1_1.rman
-rw-r----- 1 oracle oinstall 36896768 Mar 5 02:55 control_56n52v1j_1_1.rman
-rw-r----- 1 oracle oinstall 16252928 Jan 23 01:40 control_8tn1eq3t_1_1.rman
-rw-r----- 1 oracle oinstall 16252928 Jan 24 01:40 control_9cn1heg0_1_1.rman
-rw-r----- 1 oracle oinstall 202940416 Dec 15 01:04 full_backup_01mu7t50_1_1.rman
-rw-r----- 1 oracle oinstall 1097728 Dec 15 01:04 full_backup_02mu7tcc_1_1.rman
-rw-r----- 1 oracle oinstall 201285632 Dec 14 01:04 full_backup_0nmu58ou_1_1.rman
-rw-r----- 1 oracle oinstall 5957304320 Feb 29 02:46 full_backup_2ln4g9l1_1_1.rman
-rw-r----- 1 oracle oinstall 4128768 Feb 29 02:47 full_backup_2mn4gft8_1_1.rman
-rw-r----- 1 oracle oinstall 6027075584 Mar 1 02:49 full_backup_32n4o6ov_1_1.rman
-rw-r----- 1 oracle oinstall 4128768 Mar 1 02:49 full_backup_33n4od66_1_1.rman
-rw-r----- 1 oracle oinstall 6187171840 Mar 2 02:51 full_backup_3gn4qr50_1_1.rman
-rw-r----- 1 oracle oinstall 4145152 Mar 2 02:51 full_backup_3hn4r1kn_1_1.rman
-rw-r----- 1 oracle oinstall 6115786752 Mar 3 02:51 full_backup_40n4tfgu_1_1.rman
above is a short list of contents.
to do our daily backup we perform the following script (in daily)
==================
backup incremental level=0 as compressed backupset database format '/u15/rman/full_backup_%U.rman';
backup archivelog all not backed up 2 times format '/u15/rman/arc_backup_%U.rman';
backup current controlfile format '/u15/rman/control_%U.rman';
delete archivelog all backed up 2 times to device type disk completed before 'sysdate-7';
delete noprompt obsolete;
==================
Thanks and best regards
Ali

Restore database to another host - I have only rman backup files

Hi all,
The PC where Oracle was installed is crashed.
I have only the RMAN backup pieces in other computer.
I want to restore/recover this RMAN backup to other PC.
I know the commands, restore database, recover database,
but I've always used these commands with rman into existing rman
user. Now, I don't have anything. I have only the RMAN backup files.
How can I restore/recover database to other PC using these files?
The steps are? create other database, create a rman user, register
the rman backup files in this new rman, and restore these files
in this new database already created with the same name?
thank you!!!!

XM wrote:
Hi all,
The PC where Oracle was installed is crashed.
I have only the RMAN backup pieces in other computer.
I want to restore/recover this RMAN backup to other PC.
I know the commands, restore database, recover database,
but I've always used these commands with rman into existing rman
user. Now, I don't have anything. I have only the RMAN backup files.
How can I restore/recover database to other PC using these files?
The steps are? create other database, create a rman user, register
the rman backup files in this new rman, and restore these files
in this new database already created with the same name?
thank you!!!!You need to perform disaster recovery. For this, follow my step by step video tutorial:
http://kamranagayev.wordpress.com/2010/03/29/rman-video-tutorial-series-performing-disaster-recovery-with-rman/

Catalog addiional rman backup files

Im trying to catalog addiional rman backup files, and getting this error:
RMAN-07518: Reason: Foreign database file DBID: 2319619701 Database Name: SASP
Previous activities: Database dictionary was recreated due to charset problems while exporting the database...
Enterprise Manager was reconfigure with create repos due to same problems....
Thanks in advance...
Message was edited by:
elvyscruz

Previous activities: Database dictionary was
recreated due to charset problems while exporting the
database...
Enterprise Manager was reconfigure with create repos
due to same problems....I have not seen the full error messages that follows this one (post it if possible). However, if you recreated the database, then your database will now have a new DBID after it was recreated. You can see the current DBID of the database to see if it matches the one above.
If it is a standby database and it is logical standby, then it will also have a different DBID.
select dbid, name, database_role from v$database;

SQL to find rman backup files required for recovery?

Hi folks,
I'm looking for a sql statement that I can use to query the database and return a list of the RMAN backup files needed for a successful recovery based on a SCN or a point in time. I want to do it through SQL (not though rman) because I want to script an automated refresh process. My databases are backed up online, so I would need any archive log backups done during the database backup as well. So for example...
I do a database backup
Then do an archive log backup.
Pass a SQL script the lowest and highest scn numbers during the backup.
It returns a list of the rman backup pieces needed to do a successful recovery.
I've got a script, below, which shows the lowest and highest scn during the last full backup (all datafiles which exist have been backed up), if someone understands what I'm looking for and has done something similar, I would really appreciate any insight you may have. What I'd want to get back from the SQL is the names of the rman backup files (handles) which would be needed to get the database recovered to the highest scn during the backup.
SELECT MIN(VBD.CHECKPOINT_CHANGE#), MAX(VBD.CHECKPOINT_CHANGE#)
FROM V$BACKUP_DATAFILE VBD, V$DATAFILE VDF,
(SELECT
CREATION_CHANGE#,
MAX(COMPLETION_TIME) COMPLETION_TIME
FROM V$BACKUP_DATAFILE
WHERE CREATION_CHANGE# IN (
SELECT CREATION_CHANGE# FROM V$DATAFILE)
GROUP BY CREATION_CHANGE#
) QUERY1
WHERE VBD.CREATION_CHANGE# = VDF.CREATION_CHANGE#
AND VBD.CREATION_CHANGE# = QUERY1.CREATION_CHANGE#
AND VBD.COMPLETION_TIME = QUERY1.COMPLETION_TIME;
Thanks very much for your time,
-Adam vonNieda

In case anyone's wondering, here's the answer. The following query returns the min and max SCN numbers contained in the last online backup.
SELECT MIN(VBD.CHECKPOINT_CHANGE#), MAX(VBD.CHECKPOINT_CHANGE#)
FROM V$BACKUP_DATAFILE VBD, V$DATAFILE VDF,
(SELECT
CREATION_CHANGE#,
MAX(COMPLETION_TIME) COMPLETION_TIME
FROM V$BACKUP_DATAFILE
WHERE CREATION_CHANGE# IN (
SELECT CREATION_CHANGE# FROM V$DATAFILE)
GROUP BY CREATION_CHANGE#
) QUERY1
WHERE VBD.CREATION_CHANGE# = VDF.CREATION_CHANGE#
AND VBD.CREATION_CHANGE# = QUERY1.CREATION_CHANGE#
AND VBD.COMPLETION_TIME = QUERY1.COMPLETION_TIME;
This next one gets the session key for that backup.
Select distinct session_key from v$backup_datafile_details
where checkpoint_change# >= <min scn# from above> and checkpoint_change# <= <max scn# from above>;
And finally, this one returns all files written out during that RMAN session, which includes control files, data files, and archived redo logs
Select handle from v$backup_piece_details
where session_key = <session key from above> order by completion_time;

JFS2 CIO (concurrent i/o) & RMAN backup files Options

Hello,
Does anyone have good or bad experience storing RMAN backup files &
datapump or export files with CIO enabled jfs2 file systems on AIX 5.3 & Oracle
10gR2? Is that supported? Metalink and IBM documents are not very
clear about these files... i.e. it does not say anywhere it's
supported or not supported.. So asking here..
Thanks in advance for your answers.

Can anyone from Oracle comment on this?
Thanks,
Rene

Removing RMAN backup files from RMAN prompt

DB version: 10.2.0.4
OS : AIX
Due to space constraints, we had to change our retention policy today. So, i need to remove some old backup files manually to free up some space. Should i remove the backup files from OS using rm command and then issue a
delete expired backup;from RMAN prompt?
Or is there another recommended way?

If you remove them manually from the O/S, then you'll have to perform a CROSSCHECK BACKUP prior to the DELETE EXPIRED.
Or once you change your retention policy you could issue DELETE OBSOLETE, which may be the safer way to ensure you don't accidentally remove wrong backup files.

RMAN backup files differences in numbers and sizes

hi,
I have cloned one database and after doing i can see the target (cloned database has more number of files and in different sizes).
i can see the scripts are the same and environments are the same..
where do i find out why there is difference between source and target ..
ulimit -a > is same
RMAN backup scripts > is same
any clues i can find out >?
Thanks.

user13051945 wrote:
hi,
Let me make it clear here
Cloning done well no issues..
now two databases A and B are seperate now.. functioning in two different serveres
The observation (not an issue) here is
Server 1 > the backup files generated by Database A is only 10 backup files (10 * 5 = 50 )
Server 2 > the backup files generated by Database B is 25 files.... (25 * 2 = 50 )
so how the differences came in both backup scripts are the same....
hope you got my concern...10 * 5 and 25 * 2
*5 and 2* are backup piece and *10 and 25* are backupset, yes?
From each server, post:
RMAN>show all;

How can i delete old RMAN backup files

Hi All
We have configured RMAN backup for one of our clients PROD instance[10.2.0.3] in 2010 Dec.
Now my doubt is how can i delte old backup files of Dec and January, only this two months backup files only i need to delte.
kindly suggest me.
The parameters are :
CONFIGURE RETENTION POLICY TO NONE;
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/ebiz/backup/PROD-%F';
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET 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 '/ebiz/backup/PROD-%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 '/ebiz/oracle/proddb/10.2.0/dbs/snapcf_PROD.f'; # default
Regards
Shaik

Hello,
You can use this :
DELETE BACKUP COMPLETED BEFORE TO_DATE('01/31/2011 00:00:00','MM/DD/YY HH24:MI:SS');Regards,
Sylvie

RMAN backup file location

hi gurus,
my database backup file are located in one location and rman is looking for backup files in another location.
backup files are large size so it's long time to move
how can i tell to rman look for rman in perticular location
please let me know
thank you!

899329 wrote:
hi gurus,
my database backup file are located in one location and rman is looking for backup files in another location.
backup files are large size so it's long time to move
how can i tell to rman look for rman in perticular location
please let me know
thank you!Instead of moving if you want to register those backups with your controlfile. (RMAN repository)
then
$rman target /
RMAN> catalog start with 'location';
It will search for backup pieces in that location, and it prompts you for confirmation with YES/NO.
Give yes, so that all the files will be cataloged, Later you can able to view in list backup.
HTH.

Like to take rman backup files into some other machine

Dear all
I like to take Rman backup into some other machine rather than its default storage location $oracle_home/dbs in to some other machine..
While i ran database backup in rman it stores the file sets into default location $ORACLE_HOME/dbs ... I relocated in to some other drivers in same machine also.. I got work ... But due to space issue i would like to take backup into some other machine so its possible ? how to configure it...
Regards
Gopinath

GopiKrishna wrote:
Dear all
I like to take Rman backup into some other machine rather than its default storage location $oracle_home/dbs in to some other machine..
While i ran database backup in rman it stores the file sets into default location $ORACLE_HOME/dbs ... I relocated in to some other drivers in same machine also.. I got work ... But due to space issue i would like to take backup into some other machine so its possible ? how to configure it...
Regards
GopinathYou need to mount the second machine and take backup to that mount point
Kamran Agayev A.
Oracle ACE
My Oracle Video Tutorials - http://kamranagayev.com/oracle-video-tutorials/
My ebook - http://kamranagayev.com/2011/10/19/step-by-step-oracle-installation-all-in-one-e-book/

Why are my RMAN backup files still around?

Environment:
Oracle 11.2.0.3 EE on Solaris 64-bit
Good Morning (at least it's morning here at the moment),
I have a test database that I currently have set up to do an Incremental Level 0 backup every morning at about 03:00.
I also do an 'archivelog backup all' every 4 hours during the day.
My archivelog deletion policy is 'backed up 2 times'.
I have RMAN set up with a recovery window of 8 days (SHOW ALL - seen below).
I have several RMAN files dated 11 days ago.
Question: Why are these files still around?
RMAN> show all;
using target database control file instead of recovery catalog
RMAN configuration parameters for database with db_unique_name APSMDMP2 are:
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 8 DAYS;
CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F';
CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO COMPRESSED BACKUPSET PARALLELISM 3;
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1;
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1;
CONFIGURE CHANNEL DEVICE TYPE DISK MAXPIECESIZE 5 G;
CONFIGURE CHANNEL 1 DEVICE TYPE DISK FORMAT   '/rman/APSMDMP2/APSMDMP2_%T_%t_%s_%p';
CONFIGURE CHANNEL 2 DEVICE TYPE DISK FORMAT   '/rman/APSMDMP2/APSMDMP2_%T_%t_%s_%p';
CONFIGURE CHANNEL 3 DEVICE TYPE DISK FORMAT   '/rman/APSMDMP2/APSMDMP2_%T_%t_%s_%p';
CONFIGURE MAXSETSIZE TO UNLIMITED;
CONFIGURE ENCRYPTION FOR DATABASE OFF;
CONFIGURE ENCRYPTION ALGORITHM 'AES128';
CONFIGURE COMPRESSION ALGORITHM 'BASIC' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE;
CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 2 TIMES TO DISK;
CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/u01/app/oracle/product/11203/db_1/dbs/snapcf_APSMDMP2.f';I do have several entries in V$ARCHIVED_LOG with a BACKUP_COUNT = 1 but they are all dated 21 days ago and have a DELETED status as seen here:
SEQUENCE# ARC APPLIED   DEL S CTIME                         BACKUP_COUNT
      4625 YES NO        YES D 09-oct-2012 13:21:09                     1
      4626 YES NO        YES D 09-oct-2012 13:21:48                     1
      4627 YES NO        YES D 09-oct-2012 13:22:23                     1
      4628 YES NO        YES D 09-oct-2012 13:22:50                     1I am able to see the contents of the RMAN files but I don't see anything that would cause them not to be deleted during the RMAN runs. Here is an example of one of the files:
BS Key Type LV Size       Device Type Elapsed Time Completion Time
6493    Incr 0 22.75G     DISK        01:35:54     2012-10-19:04:36:13
        BP Key: 6493   Status: AVAILABLE Compressed: YES Tag: FULL_DAILY
        Piece Name: /rman/APSMDMP2/APSMDMP2_20121019_797050819_6508_1
List of Datafiles in backup set 6493
File LV Type Ckp SCN    Ckp Time            Name
2    0 Incr 564035766 2012-10-19:03:00:19 /u05/oradata/APSMDMP2/sysaux01.dbf
4    0 Incr 564035766 2012-10-19:03:00:19 /u05/oradata/APSMDMP2/users01.dbf
5    0 Incr 564035766 2012-10-19:03:00:19 /u01/oradata/APSMDMP2/data_process_dt01_01.dbf
9    0 Incr 564035766 2012-10-19:03:00:19 /u05/oradata/APSMDMP2/gmx_src_dt01_01.dbf
10   0 Incr 564035766 2012-10-19:03:00:19 /u05/oradata/APSMDMP2/gmx_src_ix01_01.dbf
12   0 Incr 564035766 2012-10-19:03:00:19 /u05/oradata/APSMDMP2/adm_data_ix01_01.dbf
13   0 Incr 564035766 2012-10-19:03:00:19 /u05/oradata/APSMDMP2/patrol01_01.dbf
16   0 Incr 564035766 2012-10-19:03:00:19 /u07/oradata/APSMDMP2/becosp_base_data_01.dbf
18   0 Incr 564035766 2012-10-19:03:00:19 /u07/oradata/APSMDMP2/becosp_base_data_02.dbf
27   0 Incr 564035766 2012-10-19:03:00:19 /u06/oradata/APSMDMP2/data_process_dt01_03.dbf
30   0 Incr 564035766 2012-10-19:03:00:19 /u05/oradata/APSMDMP2/adm_data_dt01_02.dbfI do use the 'DELETE NOPROMPT OBSOLETE' after each database and archivelog backup. Here is my Incremental Level 0 command file:
backup incremental level 0 cumulative database tag 'full_db';
backup archivelog all not backed up 2 times tag 'full_arch';
DELETE NOPROMPT OBSOLETE;I know I can remove the files manually and resync everything with a CROSSCHECK but I was trying to figure out why it happened in the first place.
Any suggestions are most welcome.
Please let me know if more information is needed.
Thanks very much!!
-gary

garywicke wrote:
Michael,
I read Ed's thread and I understand about the timing of the Full (Incr Lvl 0) and the incrementals.
In my case I'm not doing any incrementals (Incr Lvl 1) of the database, just Incr Lvl 0 every day. I do the archivelog backups during the day to keep the /arch mount point under control.
So, if I have Incremental Level 0 backups on the 19th, 20th, 21st, 22nd, ..... With an 8 day recovery window I shouldn't need the ones from the 19th or 20th at a minimum and possibly the 21st depending on when the math is done. Right?
Am I missing something?
*************** NEWS FLASH ******************
Whoops!!! Egg on my face! I just checked back in my email logs of the backups and now recall there were some disk space issues around that time that caused the backups to fail and it just so happens that the backups on the 20th, 21st and 22nd all failed.
I should learn to trust RMAN more. It is obviously smarter than me!! :-)
Sorry for the red flags. I'll do my homework more completely next time.
Not a problem. We've all been there, done that.
I can't tell you how many times I've been stuck on something, run out of ideas on my own research and thrown a question to the forum, and no sooner to I hit the 'send' button that a light goes on and I quickly get my own answer.
At least I understand the recovery window scenario better.
Thanks very much for the help and I'll see you the next time.
Have a great day!
-gary

Rman Backup files

Hi,
i am using database version 11.1.0.6 in windows 7 as my test database. i have taken RMAN full database backup. In my flash recovery area i have 2 files one file has a size of some in MB's and other in GB. why one file in MB is getting generated ???
Regards,
007
Edited by: 007 on Sep 29, 2011 4:41 AM

I think you have configured backup as backup set. So the first big BG file is the backup of you actual datafiles. the MB backup can be of you archived redologs if archiving is configured or it can be the backup of datafiles also if you have configured the maxpiecesize caluse in your RMAN command. What commands for backup ar actually using. kindly execute the following command
RMAN > show all;
and the actual rman commands used for the bacup.
Regards,
Abbasi

About RMAN backup !!!!

Dear Friends,
Let my production server running starts from 1st June .
In 15 june , I take the First rman full (or level0) backup using the command :
RMAN> backup database plus archivelog;
In 20 June I take 2nd rman full backup using : RMAN> backup database plus archivelog;
Again in 30 June , I take the Third(3rd) rman full (or level 0) backup using the command :
RMAN> backup database plus archivelog;
And also my rman policy set as :
CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
In the above scenario , I have the following questions :
1) When I take the Third(3rd) backup then is it the First RMAN backup goes to obsolete as per my rman policy ( RETENTION POLICY TO REDUNDANCY 1) ?
2) Is the above all RMAN backup make a link between them ?
3) If my first RMAN backup goes to obsolete and I have to delete the First RMAN backup , then which types of problem I face ? Can I go to previous state(suppose I need to back in 1st June) of my server if I delete First rman backup ?
4) when I take 3rd rman full backup , then is it all information from 1st january of the server are stored in the 3rd backup ? i.e., is the 3rd rman backup stores all the previous two rman backups information ?so that If I delete the previous two backup , then I get all information form 3rd rman backup .what is the actual scenario ......
plz help me to make clear concept about it .......
thx in advance .....

1) When I take the Third(3rd) backup then is it the First RMAN backup goes to obsolete as per my rman policy ( RETENTION POLICY TO REDUNDANCY 1) ?The REDUNDANCY parameter of the CONFIGURE RETENTION POLICY command specifies how many backups of each datafile and control file that RMAN should keep. In other words, if the number of backups for a specific datafile or control file exceeds the REDUNDANCY setting, then RMAN considers the extra backups as obsolete.So as in your case the redundancy is 1 so the 1st and 2nd backup are obsolete.
To check the obsolete backups run
rman> report obsolete;
To delete them
rman> delete obsolete;
Link:[http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/setup005.htm#BRBSC400]
Is the above all RMAN backup make a link between them ?I am not very much clear with the question.The RMAN information is stored in the controlfile.You can also create a new recovery catalog and register the target database. The RMAN repository records in the control file will be copied to the new recovery catalog.
when I take 3rd rman full backup , then is it all information from 1st january of the server are stored in the 3rd backup ? i.e., is the 3rd rman backup stores all the previous two rman backups information ?so that If I delete the previous two backup , then I get all information form 3rd rman backupThe 3rd RMAN backup will contain all the information of the DB from the very 1st day.You will get all the information in the 3rd rman backup as its a level 0 or what we say a FULL DATABASE BACKUP.If suppose the 3rd rman backup would have been a incremental backup, then you would have required a full backup, previous to the incremental one, so that after restoring the full backup, you restore the incremental to recover the DB completely.
Link:[http://download.oracle.com/docs/cd/B19306_01/backup.102/b14191/part1.htm#i996723]
[http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/bkup004.htm#BRBSC133]
Forgot to answer the 3rd question
3) If my first RMAN backup goes to obsolete and I have to delete the First RMAN backup , then which types of problem I face ? Can I go to previous state(suppose I need to back in 1st June) of my server if I delete First rman backup ?well, i am not very much sure , but i think is , if you have the 1st rman backup pieces physically present on the disk, you can catalog it and then use the rman command to restore the data from it of till 1st june.
To catalog the backup pieces use
rman> catalog backuppiece 'filename';
Link: [http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/maint007.htm]
HTH
Anand
Edited by: Anand... on Oct 15, 2008 10:51 AM

Information on unknown rman backup file

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