Backing up a single 10TB datafile

What are some best practices for this scenario? How can I get multiple channels/threads to attack this datafile? Backing up via a single channel seems like a waste of time and underutilizing the resources.
It seems PARALLELISM only creates multiple threads to handle multiple datafiles. Am I missing something here?
Daryl.

Finding stuff on google that I didnt know existed. "SECTION SIZE"
re: http://jhdba.wordpress.com/2010/04/06/reducing-rman-backup-time-for-unevenly-sized-tablespaces/

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I need help
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Can any one give me a step by step guide - I am not mac savvy.
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Hello!
I recently just downloaded the 'Waze' app as a backup for my Garmin. I've read a few reviews that seem to rant and rave about how good the GPS app is. It is community driven and maps are constantly being updated by users. Plus it has a few other fun stuff in it (something similar to Gasbuddy where you can owe prices on the map). But like the person above me said, there is lots of useful free GPS apps in the App Store.
Oh and I may be wrong but I remember reading an article about Google being slower about updating its maps system--ie no turn by turn voice, which many people have had complaints about.
Happy Searching!
Ps - if you switch I wouldn't go to Blackberry.

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Hi @rdwill13
You can change the default back to single sided in the preferences. I can help you with this. What operating system and version do you have? Mac or Windows?
Please click the Thumbs up icon below to thank me for responding.
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Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
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Hi all,
I'm wanting to reformat the 60 gig hard drive on my Power book (10.3.9)
back into a single drive. A friend installed and partitioned this 60 gig a few years ago and the first portion is only six gigs and contains the OS.Apps and other guts. I constantly run into problems of running out of space on that drive. What I would like to do is listed below. I'm hoping someone can point me to a tutorial or other concise written directions for how to accomplish this. I'm looking for some fairly concise steps as doing this type of work is not my strength and I don't want to mess it up.
1) Back up data from all three partitioned drives on to a single external drive of some sort.
2) Reformat the 60 gig back onto a single drive.
3) Successfully reinstall all data back on to the 60 gig and have it function as
exactly as before.
Any help you could give would be greatly appreciated.
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Vance

Hi, wvd. If the data on your three partitions now totals about 50 GB as your post indicates, then after it has all been copied back onto the repartitioned, single-volume hard drive (whose formatted capacity is about 56.8 GB) there will be about 6-7 GB of free space available on that drive. That is only 1-2 GB more than the bare minimum amount of free space that should be maintained on the drive at all times. So if you anticipate a continuing accumulation of additional data in the future, you will very soon run out of space that can prudently be used, and not long after that you will begin to risk unreliable operation of your computer and the possible corruption or loss of data due to insufficient and dwindling free space on the drive.
Therefore, it would probably be a better idea to replace the present drive with a larger one than to repartition and reuse the present drive, unless there is a significant amount of data on it now that you could conveniently store somewhere else instead. In fact if you replace the current drive with a larger one and put the old one into an external FireWire enclosure, that drive can become a secondary data storage location for data that doesn't need to be kept on your new primary drive, or it can be used to back up some or all of the data on the primary drive.

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Use of backing up a single tablespace or datafile

Hello,
I am reading the RMAN manual and I'm quite familiar with backup up a tablespace or datafile, but I can find very few uses for that. Backup up a tablespace is useful for TPITR, but since that needs another instance its of very little use in most production environments. I think you cannot restore an old version of tablespace in a normal database, unless the tablespace has long been made read-only, in which case RMAN's optimizations will do the trick.
Even less use I can find for datafile backup. I have absolutely no idea what you can do with a single datafile.
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Dear Albi!
Think of the following scenario:
You have a very large (let's say 1 Terabyte) production database that is split into n tablespaces. This database is in archivelog mode and a full backup of the hole database would take more than 10 hours.
scenario end.
In such a scenario I think you will not take a full database backup very often. Therfore you can backup portions (tablespaces and datafiles) of your database. This will take less time then a hole DBbackup.
If you have to restore your DB then RMAN will take all the files it needs from all your backup. RMAN uses always the most actual version of your datafiles. After the restore RMAN will take the archivelogs to recover all datafiles to the most actual point in time. And that's the point why partial backups of your db are not only usefull for TSPITR.
I hope I could make clear what the operative point is with partial backups.
Yours sincerely
Florian W.

Data back up from Single User Mode

Hello,
I have a problem with my 700 MHz iBook, dual USB, with OS X 10.3.9.
Unfortunately the OS doesn't start up because of "overlapped extent allocation" problem...
I would like to re-install the complete OS but before doing it, I would like to back up some directories.
Is it possible to save some data, by connecting an Ipod or some sort of external peripheral, from the Single User mode?
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Before giving up the ghost check out these:
http://docs.info.apple.com/article.html?artnum=25770.
Manually fix Overlapped Extent Allocation Errors without Disk Warrior
Overlapped overlapped extent allocation errors can be the bane of any Mac user's existence. Often, these errors go unnoticed until the problem becomes visible: your Mac might refuse to boot, crash unexpected, or worse, critical data might disappear from the Finder. Disk Utility can detect, but not fix overlapped extent allocation errors, and certain third-party utilities, such as Alsoft Diskwarrior, can fix them, but generally without reporting the consequences.
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Clearing the "overlapped" or "overallocated" extent allocation essentially means that you'll have to lose some data, because the only way to remove the overlap is to delete the file that's occupying the inode. So, if you suspect, or find out, that the guilty file is a critical system file that resides in one of the hidden system directories such as /etc /var /usr/ or visible system directories such as /System or /Library, and you don't want to reinstall the whole OS (which might not fix the overlapped extent allocation anyway), it's good to have another disk available to copy the files back to your original disk if necessary: a second bootable hard drive or a firewire drive connected to your Mac when you remove the misbehaving file. Just make sure that when you copy the file back to your boot disk that the permissions are correct, so it's best to use the "ditto" command, so that all sticky bits, flags, and permissions are preserved.
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"Overlapped Extent Allocation" (File 123456d)
No matter how many times you run fsck -fy, you'll never be rid of the error.
So, simply issue the following command:
find / -inum 123456 -print
Note the "d" was dropped, or any extra letter that appears after the inode number.
The find will return a file name that matches with the inode number, and the path to that file. If you remove the file then the fsck will not return this error next time you run it.
However, before you can delete the file(s) in single-user mode, you'll need to mount the file system. Type:
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then re-enable it when done fixing the overlapped extents and rebooting normally:
$ sudo diskutil enableJournal /
Chris Anderson is a long-time Linux propellerhead who just got his first Mac, an ibook G4, and can't keep his hands off of it. He currently works as a "The Architect" and general visionary for a maker of world-class collectibles.
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mac-address 0000.0363.0001
interface Vlan364
ip address 10.8.16.18 255.255.255.240
! CONFIG on GNS
ip vrf UNSEC-BDR
rd 10.131.148.21:65002
interface Ethernet1/0
description border router to LAN (outside)
no switchport
ip vrf forwarding UNSEC-BDR
ip address 10.8.16.21 255.255.255.240
interface Ethernet1/1
description LAN to border router (inside)
no switchport
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It is a little thing, but when they can't even keep the darn servers in sync, or even up at all for that matter, it seems huge.

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Put them all back in a TS-Folder and burn that.

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Hi All,
I have run a backup to a tape which has run sucessfully. However, all datafiles have been backup except 3.
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Hello Risky1st,
Welcome to the HP Support Forums!
I understand you are looking for a way to scan and print two images on a single sheet of paper, from the setting I have seen on the printer, this is not an option.
The work around you have found is the best and only thing I can think of too.
I wish I had better information to share, but have a great weekend just the same.
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I work on behalf of HP
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.
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Backing up a *single* 10TB datafile

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Backing up a single 10TB datafile