Disk vs tape

hi all ,
oracle 11g.2 rac 2-nodes with asm RHEL 5
which the best backup to disk or tape database size is 126G but the used is 16G???

There is nothing "Best" nor "Worst" in the IT. We can not say that tape/disk backup is more good/worst. If you google with "disk vs tape backup oracle" you may find couple of links mentioning pros and cons example : http://www.eversyncsolutions.com/disk-vs-tape.html.
For greater details you should read :
RMAN-Based Disk and Tape Backup Strategies: Scenarios
http://docs.oracle.com/cd/B19306_01/backup.102/b14192/bkscenar.htm
So, this is answer of your post.
Now your next post, which is basically not a post; rather a new question, and this type of posts always makes members irritate. Why? Because you could mention all the details of next post in your first post, so that person who is going to help you may judge your question fully; anyway...
but i need to make full backup and incremental backup and apply block change tracking all of these not support in TAPE???And what docs are saying :
Location of the Block Change Tracking FileOne block change tracking file is created for the whole database. By default, the change tracking file is created as an Oracle managed file in the destination specified by the DB_CREATE_FILE_DEST initialization parameter. You can also place the change tracking file in any location you choose, by specifying its name when enabling block change tracking. Oracle recommends against using a raw device (that is, a disk without a file system) as a change tracking file.
http://docs.oracle.com/cd/E14072_01/backup.112/e10642/rcmbckba.htm#BRADV89533
And [url http://sysdba.wordpress.com/2006/05/18/how-to-use-fast-incremental-backups-with-block-change-tracking-with-oracle-10g/]How to use Fast Incremental Backups with Block Change Tracking with Oracle 10g may also be of your interest.
Regards
Girish Sharma

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Moving backed up file in disk to tape using RMAN

Hi All,
Is there a way in RMAN to move an already backed up file present in disk to tape?
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Oracle Database Version : 10.2.0
OS : SunOS 5.10
I'd be grateful if you can provide me with suggestions.
Thanks,
...

RMAN will not move the already backed up files.
Instead you can use CATALOG START WITH option to move the files from disk to catalog.
Schedule this as a job then RMAN will move the backup files.
refer this,
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/maint007.htm#i1007978
Thanks
Edited by: Cj on Dec 14, 2010 1:29 AM

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Thank you. That's what I thought will need to happen.
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Disk V$ Tape Drive for Rman

Hi,
Os : Aix,Red hat 4.2
Db : 10
We taking rman backup which stores in Tape Drive.(It took 11 hours, incremental 0 level).due to ORA-27030 & ORA-19511,we couldn't use Tape drive temporarliy.
So we used disk for rman backup.(It took 4 hours to complete).
Which is best storage(ie fastest) for rman backup /restoration whether DISK or TAPE?
What are the factors determine it?
Thanks & regards,
VN

What is more important to you, then choose. It's simple: tape is more reliable and faster drives. At a cost of not very high volumes, they are about the same per megabyte. It - http://www.allbackup.ru/articles/article6.html - is more less actually.
Edited by: 900355 on 02.12.2011 2:49
Edited by: 900355 on 02.12.2011 2:49

Backup to Disk and Tape

Looking to convert our RMAN Tape backups to Disk using incr merge.
RUN {
RECOVER COPY OF DATABASE WITH TAG 'incr_update';
BACKUP INCREMENTAL LEVEL 1 FOR RECOVER OF COPY WITH TAG 'incr_update'
DATABASE;
Then we want to backup all backupsets to tape for archive. So questions are
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2) Once a week, we would want to backup the full image copy "TAG 'incr_update'" to tape as well.
Thanks...

Thanks for the info... As a follow up question... I see some samples for IMB out there like so:
run {
recover copy of database with tag 'incremental_merge_backup';
backup incremental level 1 cumulative copies=1 for recover of copy with tag 'incremental_merge_backup' database;
What is the COPIES=1 for? Can't seem to find any docs on how it affect a IMB.
Thanks..

Brarchive to disk - no tapes involved

We are planning to implement a brbackup/brarchive solution as follows:
1. brarchive to NFS area on SERVERA
2. brarchive same files as above to NFS area 2 on SERVERB
3. delete those files successfully saved step 2
4. Backup to tape everything on SERVERA daily.
5. Archive files remain on SERVERA for 2 weeks.
BRARCHIVE seems very restrictive when you want to do disk-based archives in that it doesn't allow -scd etc.
It only seems to allow save and delete-save.
What options are there for a fully disk-based backup solution?

Not that I tried that,
but "-ssd" works when two tape drives are given!
May be if you specifiy both archive target dirs, "-ssd" will work for "disk" as well.
Volker

RMAN backup to disk vs tape

AIX R 2
Oracle: 10.2.0.4
I have been testing rman backup strategies on a db in noarchivelog (development) using the following command:
(*) note: if db is in noarchivelog then you must do a cold backup - have the db mounted but not opened.
rman> backup database format '/a010/d01/bck/%U'
I have found that rman will backup to disk about 2GB per minute. Now I want to test this to tape to compare metrics.
Question: What configurations does RMAN need to write directly to tape?
What are the backup steps to write to tape? Do I need to specify both the tape channel and also where the format output gets written?
Thanks all.

OK
You need to install the Oracle driver for Tivoli (optionally sold with Tivoli) and install that in your Oracle software tree.
Then you can configure your channels to write to tape (this is documented).
For the rest there is no difference, although there are no directory names.
Sybrand Bakker
Senior Oracle DBA

RMAN backup to write on tape and disk in the same time

Hi all,
I want to take backup using RMAN and to have the backup file in a tape and a disk, i know i can allocate channel for tape, or disk. My question is can i use the both disk and tape in an rman backup one time. I mean i want to have rman writing backup file in a local disk and a tape in the same time to have redoundant backup at a tape and local disk.
If some scripts is there, it will be welcome.
Thanks
Raitsarevo

See Duplexing backup sets.

RMAN to Disk (shared mounted file system) then secure backup to Tape

Hi
This is a little away from the norm and I am new to Oracle secure Backup.
We have several databases on physically separate servers, all backup to a central disk (a ZFS shared file-system).
We have a media server also with the same mounted file-system so it can see all of the RMAN backups there.
Secure backup is installed on the media server and is configured as such.
The question I have is I need to backup the file system to tape where all the RMAN backups live, I have configured the data set but I get file permission errors for each of the RMAN backup files in the directory.
I have tried to change these permissions but to no avail (assuming it is just a read write access change that is needed - but this may be a problem in the long run). What is the general process for backup of already created RMAN backups sat in a shared area? I know its not the norm to do to disk then to tape backups but can this be done? I would have installed Secure backup client on each server and managed the whole backup through secure backup but this is not possible I must do the to tape from the file system, any advise and guidance on this would be much appreciated.
Kind regards
Vicky
Edited by: user10090654 on Oct 4, 2011 4:50 AM

You can easily accomplish a very streamlined D2D2T strategy! RMAN backup to disk...then backup that disk to tape via RMAN and OSB. Upon restore, RMAN will restore from best media disk or tape based on where files are located.
Donna

How to move rman backups on tap from disk

Hi,
I have rman backup files on the disk, now how we can move these files to tap. is there any rman command or is there any script to move.
Thank you!

Do you use FRA (Flash recovery area)?
If you use FRA then configure RMAN to take backup to tape. And backup fra to tape.
RUN
ALLOCATE CHANNEL ch0 TYPE ‘SBT_TAPE’;
BACKUP RECOVERY AREA;
RELEASE CHANNEL ch0;
If you don't use FRA then you can backup your backupsets which are on the disk to tape.
RMAN> BACKUP DEVICE TYPE SBT BACKUPSET ALL;
Talip Hakan Ozturk
http://taliphakanozturken.wordpress.com/

Which is better: Backup to agent/tape or disk?

We have the option to install an agent from our backup application
that would, I believe, perform RMAN backups direct to backup tape.
Alternatively we can make RMAN backups to disk, and run a cheap
file system agent and grab the disk based dumps. Is either method
known to be a better solution? Using an agent/tape seems riskier.
Thanks!

File system agents are much cheaper than Oracle agentsDepends, you can also use OSB which is free as long as you use locally attached single tape drive.
Having an extra LUN for disk backups is likely a cheaper solution than intricate processes for the direct to tape methodBut you can't compare extra LUN to tape because that extra LUN is also coming from the same SAN and all the backups are on the disks controlled by that SAN where as tapes are truly secondary backup place which can be managed totally differently and has no dependency on others means for some reason if you can't access disk backups tapes are always there.
Daljit Singh

BRtools Two-Phase-Backup to remote disk and remote tape drive

Hello,
i want to two-phase-backup a SAP-System to a remote disk and from there to a tape drive.
Backup to remote disk works fine, but can i use brtools to write the backup-files from the remote machine to a tape drive that is connected to the remote machine?
I'm using SLES 10 on both machines.
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Thanks in advance for your help.
Regards
Phil

Hi Nirmal,
thanks for your answer.
But i can do disk to tape Backups, when i choose "Backup of Disk Backup" from BRtools, i see a list of all Backups i wrote to the local disk and can write them to remote tape by using pipe as backup device.
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Regards
Phil

How to create 800K disks for Mac Plus

I've acquired a Mac Plus in good working condition, but it's just standalone. Eventually I want to network it, but for right now, is there a way to use my Mac Mini or a PC to create 800k disks for the Mac Plus? Things like OS upgrades and other software are available out on the net, but I can't get them to the Plus. I've tried a USB floppy disk drive on the Mini, but it only works with HD diskettes.

sacsr,
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here is a website with the whole list:
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It will probably be much easier to find an Apple 300 or 600i CD-ROM drive that should read CDs burned in your modern Mac. Your original question was about floppies. The real question is "How do I get data from a new computer to an old computer." That question offers more possibilities. I am suggesting a better and cheaper alternative. Having fun with older equipment requires purchasing intermediate equipment.
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mac G4 desktop Mac OS X (10.4.8)

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<br

DPM couldn't find valid recovery points for VM listed as having numerous recovery points when writing to tape

I'm seeing the following events when DPM tries writing to tape:
Log Name:      DPM Alerts
Source:        DPM-EM
Date:          15/02/2014 12:01:07
Event ID:      3311
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      <backup server FQDN>
Description:
The back up to tape job failed for the following reason: (ID: 3311)
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All VMs on each of the affected servers have recovery points but
When performing disk to disk to tape backups (d2D2T), tape backups will fail if a new disk based backup is not created before the next scheduled tape backup. DPM always makes tape backups by mounting last successful disk based recovery point.
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http://social.technet.microsoft.com/Forums/en-US/a9b80780-2a5c-43bc-8111-ee35db56f359/backup-tapes-dpm-2012?forum=dpmtapebackuprecovery
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of DPM (I'm using the latest 2012 R2 fully updated).

Hi,
I've been having some difficulty running the Powershell command, see below. I've been using this for guidance http://technet.microsoft.com/en-us/library/hh881586%28v=sc.20%29.aspx where am I going wrong here?
$Pg = Get-DPMProtectionGroup
-DPMServerName <dpm server name here>
$Ds = Get-DPMDatasource
-ProtectionGroup $Pg[1]
New-DPMRecoveryPoint
-Datasource $Ds
-Disk -DiskRecoveryPointOption -WithDataIntegrityCheck
PS C:\Program Files\Microsoft System Center 2012 R2\DPM\DPM\bin> New-DPMRecovery
Point -Datasource $Ds -Disk -DiskRecoveryPointOption -WithDataIntegrityCheck
New-DPMRecoveryPoint : Missing an argument for parameter
'DiskRecoveryPointOption'. Specify a parameter of type 'Microsoft.Internal.Ente
rpriseStorage.Dls.EngineUICommon.EngineConstants.DbEnums+CreateDiskRecoveryPoin
tOption' and try again.
At line:1 char:44
+ New-DPMRecoveryPoint -Datasource $Ds -Disk -DiskRecoveryPointOption
-WithDataInt ...
+
~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo
: InvalidArgument: (:) [New-DPMRecoveryPoint], Par
   ameterBindingException
    + FullyQualifiedErrorId : MissingArgument,Microsoft.Internal.EnterpriseSto
   rage.Dls.UI.Cmdlet.ProtectionCmdLets.CreateRecoveryPoint
PS C:\Program Files\Microsoft System Center 2012 R2\DPM\DPM\bin>

Disk vs tape

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