Archive files and rman backup

Hi Experts,
For testing, I creates a testing DB. after that, I delete some archive file from physical side.
testing DB works well.
However, I tyr to back up thsi testing DB. I got below error message
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=142 devtype=DISK
new RMAN configuration parameters:
CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT 'D:\Oraclebackup\CLS\exports\RMAN\%U
new RMAN configuration parameters are successfully stored
released channel: ORA_DISK_1
Starting backup at 15-JAN-09
current log archived
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=142 devtype=DISK
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup plus archivelog command at 01/15/2009 15:18:13
RMAN-06059: expected archived log not found, lost of archived log compromises re
coverability
ORA-19625: error identifying file D:\test\ARC00001_0675529905.001
ORA-27041: unable to open file
OSD-04002: unable to open file
O/S-Error: (OS 2) The system cannot find the file specified.
So How to fix this issue?
That means we can not delete any archive log files that we do not need it.
Otherwise there are a problemwhen we try to backup later
JIm

Hi Jim,
change archivelog all crosscheck ;
will do the trick.
You can purge archive files but do it within rman.
Add a line in your rman backup script which makes backup your database and archive files like this.
delete noprompt copy of archivelog all completed before 'SYSDATE-3';
Regards,
Tycho

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Archivelog files and Rman backup

Hi all,
Please somebody guide me regarding the following concept.
We have the oracle server version 10.2.0.1.0, working with Windows OS,
I had set the parameter log_archive_dest_1 for locating archivelog files, then I had changed the archivelog files to the flash recovery area(located in another disk) by using the parameters db_recovery_file_dest_size and db_recovery_file_dest.
Now the archivelog files are being located at two different location. At this point, If I take backup for archivelog files with the aid of RMAN, then ,
How will the RMAN take backup from those two different locations?
Thanks&Regards,
Jai.

PROBLEM :
I have archivelogs duplexed - when running RMAN - rman backups up the archivelogs from both duplexed destinations - from the user manual - this should not be the case, any ideas?
Details:
I have archivelogs duplexed
I have the following set in rman :
CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 2 DAYS;
CONFIGURE BACKUP OPTIMIZATION ON;
CONFIGURE DEFAULT DEVICE TYPE TO DISK;
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CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/backup/rman/WPPMD/control_%F';
CONFIGURE DEVICE TYPE 'SBT_TAPE' PARALLELISM 10 BACKUP TYPE TO BACKUPSET;
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 '/backup/rman/WPPMD/backup_%d_%T_%U' MAXPIECESIZE 10 G;
CONFIGURE MAXSETSIZE TO UNLIMITED; # default
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
CONFIGURE COMPRESSION ALGORITHM 'LOW' AS OF RELEASE 'DEFAULT' OPTIMIZE FOR LOAD TRUE;
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CONFIGURE SNAPSHOT CONTROLFILE NAME TO '/app/oracle/product/11.2.0/dbhome_1/dbs/snapcf_WPPMD.f'; # default
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backup incremental level=$RMAN_LEVEL database plus archivelog;
($RMAN_LEVEL changes between 0 and 1 depending on the day of the week)
It backs both duplex copies of the same archivelog
From the document :
Oracle10g / 11g - Getting Started with Recovery Manager (RMAN) [ID 360416.1]
It says :
Even if your redo logs are being archived to multiple destinations and you use RMAN to back up archived redo logs,
RMAN selects only one copy of the archived redo log file to include in the backup set. (Since logs with the same log sequence number are identical, there is no need to include more than one copy.)
But this is not the case ie
RMAN> list archivelog sequence 2445;
using target database control file instead of recovery catalog
List of Archived Log Copies for database with db_unique_name WPPMD
=====================================================================
Key Thrd Seq S Low Time
4640 1 2445 A 17-DEC-10
Name: /log/recovery_area/WPPMD/archivelog2/1_2445_735315419.dbf
4639 1 2445 A 17-DEC-10
Name: /log/recovery_area/WPPMD/archivelog/2010_12_17/o1_mf_1_2445_6jpx9n7c_.arc
So it still backing up both copies of the archive log.
Any ideas? is this a bug?
Thanks
Luca
Edited by: user4599449 on 17-Dec-2010 07:05
Edited by: user4599449 on 17-Dec-2010 07:06

Implications of losing ArchivedLogs and RMAN Backup directory.

DB version:10gR2
We have a test database which is important since it is a pre-production DB used by the application team for their final testing .
Currently this DB is not in Archivelog mode. Every night a cronjob runs to create the expdp datapump dump of the schemas in this DB.
We want to test online RMAN backups in this DB. So we are going to put this db in ARCHIVELOG mode for a week.
The RMAN backup pieces will be stored in +/u03/data1/orabkp+ and the Archived logs will be stored in +/u04/ach_logs+ directory.
We want to know the impact of /u04/ach_logs , the archived logs directory getting accidently deleted. I know that the accidental deletion of RMAN backup directory shouldn't impact the normal running of the database. But we want to know the if the accidental deletion of Archived redo logs directory will impact the DB.
Edited by: user10633418 on Sep 25, 2009 2:53 AM

NO, it will not impact in the database. If you delete any archive log files database will run normally. But you won't restore your database in point in time. For recovery you need your full backup of all datafiles + archivelogs + online redo log files.
For a backup policy of any production database where you don't want to lose any transaction you must reserve your archive logs files by rman backup.
Regards
Asif Kabir

How to calculate storage space for archive log files and database backups?

Hi all,
I have a 1.8 terabyte Oracle 9i database and need to plan for how much additional disk space I will need to perform nightly backups and for archivelog files. Is there a script or formula available that can help me estimate how much required disk space I will need to hold a days worth of archived logs as well as a nightly export dump file and a full hot RMAN backup on disk?
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I'm not sure how to estimate the size of your backups, especially if you use incrementals. However, the space required for archive logs will be equal to the amount of REDO your DB generates. I would count the number of log switches per day with a query like the following:
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Hi all,
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BALAKRIS005 wrote:
Hi all,
I am able to backup few archives using rman. But its taking some archivelogs in the same directory. Can anybody tell me the reason.
After registering the archivelog using catalog command am able to take the backup of all the files.
Can anybody tell me the exact reason behind this.Hi, there are no problems.Consider you have two archive destinations,then you want bakup archivelogs,in during backup operation rman read information from repository(controlfile or catalog) and backup each log(get only one copy).Rman see one destination and continue backup if there something fails(some logs missing or corrupted) then read other locations and will backup all archivelogs.This is normal situation.

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How to restore backup archived files

hi folks
i have backup the archived files ,now just for educational purpose i want to back up/restore database from these archived files what steps i will take,i read that control files should also be back up is it true if it is then why control files should be backed up..
if i have archive files and control files then what i will take step to restore the database after failure please tell me some steps.
umaisi
tks & regards

Now I'm eager to know also,if I have my weekly cold
backup,which is the datafiles,controlfiles and
redologs, and I do export bckup for my data
daily.and if the db crashes, what r the steps for me
to restore my data.will I be able to restore it upto
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HTH

Archive files and rman backup

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