Incremental backup time query?

Database size = 270GB
Time taken for full level 0 backup = 50 minutes (Day 1)
Time taken for cumulative level 1 backup = 70 minutes (Day 2)
Time taken for differental level 1 backup = 55 minutes (Day 3)
My question is how come the incremental backup is taking more time than the full backup time?
Please advice.
Sami Malik
[email protected]

Sami Malik wrote:
Yes incremental backup is taken on the same time when there is heavy load on the system. For sure is this the reason? No, not for sure. We haven't seen enough info to say for sure, but given what we have been shown, it is a reasonable first guess. To know for sure, you need to do some actual performance analysis during both full and incremental backups and compare the two. STATSPACK is always a good place to start.
I will try the incremental backup at night when there is nobody connected.
Even though online backups can be taken anytime, it's always a good idea to schedule them during low-usage times.
But one more question when in case if there is a 24/7 system, then its no use of taking incremental backup right?Why would you think that? If your system is 24/7, that's even more reason to be taking incrementals. If you do have to perform a recovery, having incrementals will shorten your recovery time, vs. haveing to apply all archived redo back to the last full backup.
Also, you should be taking regular full backups as well. Most people take a full backup weekly, and an incremental on the other 6 days of the week.
As an additional thought .... while it is a curiosity that that your incremental took longer than the full and much could be learned by chasing it down, you always have to ask "is this a problem that needs to be solved?" If you schedule all backups (full and incremental) during low-use times, and the users do not notice any impact, do you really care if the incremental took longer than the full? On the other hand, it may not be a problem that "needs" to be solved, but running it down may reveal other problems that are impacting or have real potential to impact the business, and should be solved.

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Oracle incremental backup too slow

Hello All,
Oracle 9.2.0.7
Windows 2003 server
Database size around 200 GB.
Daily archive generation may be around 40. Archive log size 200 MB.
We have implemented the below backup strategy
1. weekly once full incremental level 0 backup(differential).
2. Daily incremental level 1 backup(differential).
Daily incremental backup size will be around 1 GB.
Now we are facing a problem because of the incremental backup. The incremental backup is taking more than 1 hour time to complete. So we are not able to run it in the production time.its a 24/7 production database.
Please advice how to reduce the incremental backup time ?
Is there any options like what we have in 10g Block change tracking. please advice..
TIA,

ORCLDB wrote:
Hello All,
Oracle 9.2.0.7
Windows 2003 server
Database size around 200 GB.
Daily archive generation may be around 40. Archive log size 200 MB.
We have implemented the below backup strategy
1. weekly once full incremental level 0 backup(differential).
2. Daily incremental level 1 backup(differential).
Daily incremental backup size will be around 1 GB.
Now we are facing a problem because of the incremental backup. The incremental backup is taking more than 1 hour time to complete. So we are not able to run it in the production time.its a 24/7 production database.
Please advice how to reduce the incremental backup time ?
Is there any options like what we have in 10g Block change tracking. please advice..
TIA,Please refer to documentation:
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14191/rcmtunin.htm#CACJCBDB

Time Machine won't do incremental backups after I restored my computer

I am using a macbook (2010 version) and operating Lion. I had a problem with my Macbook where it wouldn't log on, even in safe mode, so I restored it using Timemachine. Now that everything is back up and running well I want to keep backing up. But Time Machine now says that there is not eneough space on the backup disk as it wants to back up the whole computer alongside the exisitng back up. In short it will no longer do incremental backups on top of what has already been backed up. I don't want to wipe my backup disk for fear that something might go wrong again and I may want to go back to a version earlier than the one I restored. Is there anyway of getting round this problem? It seems like a fairly serious problem.
I would appreciate any help.

ms364 wrote:
I am using a macbook (2010 version) and operating Lion. I had a problem with my Macbook where it wouldn't log on, even in safe mode, so I restored it using Timemachine.
When you erased the disk, it got a new UUID (Universally Unique IDentifier), which is treated like a different drive, and Time Machine will back it up in it's entirety.
Did you do a full system restore, starting from the Recovery HD? If so, that should have left a "trail" so Time Machine should have automatically "associated" the restored disk with the existing backups.
If you did it "piecemeal," though, via the "Star Wars" display, it won't (that doesn't leave the trail for TM to figure out what happened).
You might be able to get it to do the association manually. See #B6 in Time Machine - Troubleshooting.
But Linc is right; you apparently need a larger TM drive. See #1 in Time Machine - Frequently Asked Questions.

Does Time Machine still do incremental backups after a restore?

Hi --
We have a 500GB external iomega drive that just died and I have been working to restore it's files from Time Machine onto a new 500 GB drive. I formatted the new drive and gave it the same name as the old one, and it looks like Time Machine was smart enough to do the right thing and restore the files to their original locations.
However, this morning -- within 24 hours of completing the restore -- we see an error message from TM saying it is out of space and it cannot perform a backup. It claims that about 450 GB are needed, which is about the same size of all the files we restored. Is it possible that once backup files are restored they are not longer considered backed up, and thus Time Machine immediately tries to back up all the files it just restored? I assumed it would still do incremental backups but recognize that restored files do not need to be backed up again unless / until they are edited...
Thanks,
Ram on

felciano wrote:
Hi --
We have a 500GB external iomega drive that just died and I have been working to restore it's files from Time Machine onto a new 500 GB drive. I formatted the new drive and gave it the same name as the old one, and it looks like Time Machine was smart enough to do the right thing and restore the files to their original locations.
That's quite unusual. Normally it does a full backup immediately: http://support.apple.com/kb/TS1338
See #C4 in [Time Machine - Troubleshooting|http://web.me.com/pondini/Time_Machine/Troubleshooting.html] (or use the link in *User Tips* at the top of this forum).

Time Machine Incremental Backups

I have just purchased a new MacBook Pro and restored my old MacBook on the new one using my Time Machine backup. Now I want Time Machine to continue backing up using the old backup and not starting a new backup from scratch. In effect, I want Time Machine to do incremental backups. I have read about Time Machine tying the Mac address of the old MacBook to the old backup I already have and as such, my new MacBook will have to create its own backup from scratch. Is there a work around this problem? Any helpful hints are welcome.

iMinds wrote:
Thanks for your suggestion. Yes, I did a full system restore, by booting the new Mac from the Leopard Install disc and selecting Utilities then Restore from Backups from the Menubar. What else can I do?
Eeeeek! You now have the old Mac's entire version of OSX on the new one. I'm surprised it booted up at all. You may not have the correct hardware drivers and other things for the new Mac.
I'm sorry to say, you need to start over. You need to do an *Erase and Install* using the Leopard Install disc that came with the new Mac, to put the correct version of OSX back on it. Then you can Migrate (transfer) everything else from your TM backups.
See the *Erase, Install, & Migrate* section of the Glenn Carter - Restoring Your Entire System / Time Machine *User Tip* at the top of this forum.
Once that's done, TM's next backup will be a full one. Everything you put on the new Mac's internal HD is new *to that Mac* as well as new *to that disk,* and TM's whole role in life is to back up everything that's new or changed. You cannot prevent it.
Also, your old backups will not appear if you use the normal +Enter Time Machine+ option on the new Mac; you'll need the Browse option as per item #17 of the Frequently Asked Questions *User Tip* at the top of this forum.
Plus, they won't be deleted by TM as the disk fills up, and it needs room for new backups. So your best bet will probably be, once you're sure everything transferred over properly, to simply erase the TM disk via Disk Utility and let TM start fresh.

Time capsule incremental backup hangs forever

My new 3TB Time Capsule is hooked by Ethernet to my Mac Pro. It backed up everything for the first time (1.65 TB) but the incremental backups never get completed. The progress bar has been stuck at 'Backing up 0MB of 465MB' for a whole day. I'm thinking maybe Time Capsule can't handle large backup files well. Any ideas? Thank you.

Ok, you need to verify the local disk and sparsebundle in the TC.
See A5 here. http://pondini.org/TM/Troubleshooting.html
I would also install the widget A1 so you get proper log messages of what TM is doing and getting stuck on..
On such a big backup try to use ethernet not wireless. It can take ages for wireless to handle all the tasks involved in maintaining the backup.

Time Capsule not doing incremental backups

My Time Capsule has suddenly started backing up the whole hard drive every time instead of doing incremental backups.
How can I fix this? I am running the latest version of Snow Leopard - I have not installed Lion yet.

see section D in this user tip.

Time machine not doing incremental backups - instead doing full backups

hi,
Time machine does a complete full backup, and then instead of doing incremental backups, it wants to keep doing full backups.
help.

why do you think it's doing full backups?
install TimeMachineBuddy widget and see exactly what it says. also install TimeTracker and see what exactly is being backed up every time
http://www.charlessoft.com/
but first, verify both the internal and TM drive with disk utility. verify disk, not permissions. if it reports any errors repair both drives. you'll need to boot from the snow leopard DVD to repair the main startup drive.
also, see Pondini's troubleshooting tips at the top of the TM forum.
http://discussions.apple.com/thread.jspa?threadID=2057525
Message was edited by: V.K.

OS X Lion v10.7 Time machine won't do incremental backups.

Time machine under Snow Leopard used to do small incremental backups just fine. After upgrading to Lion though, every time I try to do a time machine backup, it attempts to perform a full backup (hundreds of gigabytes every time). Usually the first full backup completes fine but instead of doing subsequent small/incremental backups of the changed files, it starts over doing full backup but there isn't enough room on the backup drive for that so it fails.
I've found other people with the same issue here: http://forums.whirlpool.net.au/archive/1745345
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M

I have the same problem only full backups all the time I upgraded from Snow Leopard to Lion and on Snow Leopard I had no issues with Time Machine. So what I have done:
Formated the Time Machine Backup Disk (it's an USB-drive) - didn't help
I deleted all the Time Machine Settings (plists) - didn't help
Used Disk Utility to verify user rights and drive - didn't help
Used TechTool Pro 6 to verify the drive - didn't help
I still only get full backups. If I exclude the a catalogue/folder, the backup will be smaller, but it still takes a full backup of the items selected ...
My system is the same as before the upgrade - no new hardware and so on. This is really strange

Incremental Backups in Time Machine taking forever

Greetings all,
I have read the various posts about slow initial backups with Time Machine. I, on the other hand, had no such problem. However, now that my initial backup is complete I find it takes quite a long time for Time Machine to do its hourly thing. I mean a LONG time. The machine will sit for minutes at a time doing nothing, then copy a few kilobytes of a reported 239 MB backup. Then when it finally does complete - roughly 30 minutes later - it will sit for 10 or 15 minutes at the "Finishing backup" stage. At this rate Time Machine is running almost constantly - by the time the darnned thing finishes it's almost time to start again. It didn't do this on my G5 quad core with the same amount of data (about 850 GB). Does anyone have any ideas why this might be happening?
Thanks for your help.

Your Majesty!!
Sounds like your incremental backups are quite fast!
I have a mid 2011 iMac with SSD and 2TB HDD, and Time Machine incremental backups take anything up to 5 hours, sometimes longer. Trivial amounts of data are usually involved, but the log reports very large numbers of files.
One time I completed a Time Machine backup, rebooted and initiated another backup immediately with very few apps running (Console, Activity Monitor), and after several hours, the backup log said it had backed up over 800,000 files but only a very small amount of data.
I have a case open with AppleCare since July 1st. They have a whole lot of logs and other information being analyzed.
You will find others who have the same unresolved problem at - https://discussions.apple.com/thread/3144862?start=0&tstart=0

Time Machine wants to do a full backup. How do I point it to my previous backups so it will do an incremental backup?

I lost my wireless connection to my backup drive for a short time. Now time machine wants to do a full backup. It doesn't know that I have previous backups. How do I point it to the previous backups so that time machine continues to do incremental backups rather than doing another full backup.

I did some more reading and I found that Time Machine would find the older backups once a new backup is completed. The backup ended up being a little larger than previous backups (2.65 GB vs typical incremental backups of several MB's) but when it completed, time machine updated the last backup time/date and the oldest backup time/date properly. So I guess, I don't have a problem.

Incremental backup from time capsule (time machine backup) to external disk

I have two questions regarding backing up a time capsule backup.
I would like to backup the time machine backup of my Macs from a time capsule to an external hard disk. The time capsule is a first geneneration one with 500 GB. The external hard disk has 500 GB as well with USB and firewire ports..
First question: What is the best way to connect these two hard drives - I am using a MacBook Air with two USB ports ?
Second question: What backup software could I use to do incremental backups - I tried ChronoSync but it is not picking up the changes of the sparcebundles ?
Thank you for every valuable advice
Regards

CAAN wrote:
I have two questions regarding backing up a time capsule backup.
I would like to backup the time machine backup of my Macs from a time capsule to an external hard disk.
Backing-up your backups is generally not a good idea. If there's a problem with the original backup, it will be copied to, and perhaps magnified on, the copy.
You'd be much better off making "secondary" backups separately. See #27 in [Time Machine - Troubleshooting|http://web.me.com/pondini/Time_Machine/Troubleshooting.html] (or use the link in *User Tips* at the top of the +Time Machine+ forum), for some suggestions.
About the only alternative is to "archive" the TC's contents to a USB drive connected to it, but that's not incremental, and has other downsides as well. See #Q6 in [Using Time Machine with a Time Capsule|http://web.me.com/pondini/TimeMachine/TimeCapsule.html] (or use the link in *User Tips* at the top of this forum).

Time Machine - lost incremental backup

The preferences panel for Time machine says it keeps
* hourly backups for the past 24 hours,
* daily backups for the past month,
* weekly backups until your disk is full.
I notice that the reduction of hourly backups to one backup for a day appears to keep the earliest (incremental) backup for that day and deletes the rest.
To test this, I created a small file on the desktop on 13th Oct 2008 at 18:30, let time machine back it up at 18:45 and I then moved the file from the desktop to the trash at 19:00.
I checked that the file existed in the time machine backup for 18:45.
As I suspected, Time machine has only kept one backup for 13 Oct timed 12:01 am. The file is not in the backup for the 13th or 14th Oct (it is now 15th Oct). The original file is still in my trash.
If this had been an important file that I had deleted accidentally, I would not be very happy.
For the record I am using a MacBook running OS 10.5.5 using a 500Gb Seagate FreeAgent drive connected via firewire.
Shouldn't Time Machine consolidate all the incremental backups for one day into the one backup that it keeps (and eventually consolidate the daily backups into the weekly one that it keeps) so that files are not 'lost' in this way?
Arthur L.

Welcome to Discussions.
[This|http://weblog.infoworld.com/enterprisemac/archives/2007/12/howleopardtim.html] explains it well:
"As Apple presents the Time Machine filesystem view, you can see your system approximately:
As it was at the top of each hour today
As it was each day for the past 30 days, starting yesterday
As it was each week, starting 31 days ago, going back as far as disk space permits
A distraught user might only be interested in the amount of data he may have lost:
If you accidentally deleted a file today, you lose up to an hour's work
If you deleted it between yesterday and 30 days ago, you lose up to a day's work
If you deleted it more than 30 days ago, you can lose up to one week's work, or all of it."
Hopefully the file you've lost took longer than an hour to create than the example you tried.
/p

Is Time Machine a incremental Backup system???

Dear community,
i have a 500GB HD in the Notebook, and a 500GB HD as a External USB-Drive for the Time Machine Backup. For 1 Jear i had the same problem. I formatted the external Disk, made a Time Machine Backup everything is OK. Than i connectet the HD after 1 Week and the Error cames, that no Backup can be made, because the place on the Time Machine HD is to less.
I had a 60 GB free space on the Notebook. How can it be? I searched in the net, and there was a known issue with the snow leopard. Ok. Than i taket my Credit Card, an bought Lion. nice... now is the same problem... 500GB Bakup HD, 500GB internal Notebook HD... Second Backup to increment the first one and the error: No enought space on the Time Machine HD....On the Internal dist 43 GB Free, on the external HD 100 GB free.
How can it Be? Is the Time Machine a incremental Backup System or a cheap xcopy from DOS-Times?
Pleas Help
Thanks a lot
Bye

To do what you want to do, you may want to consider a cloning program. Some have trail versions.
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Time Machine Stuck (Incremental backup, not Initial)

Hey...me again.
I was finally successful yesterday backing up 160GB of data with Time Machine.
However, this morning, the incremental backup is taking forever. It's been stuck at "3.6MB of 6.7MB" for over 20 minutes. It would seem to me that 6.7MB should be pretty quick to backup.
I have received these messages from TM Buddy:
Starting standard backup
Backing up to: /Volumes/Time Machine/Backups.backupdb
No pre-backup thinning needed: 100.0 MB requested (including padding), 279.56 GB available
Unable to rebuild path cache for source item. Partial source path:
Copied 305079 files (49.1 MB) from volume Macintosh HD.
No pre-backup thinning needed: 100.0 MB requested (including padding), 279.31 GB available
And Console shows this:
Aug 25 10:23:53 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd[254]: Backup requested by user
Aug 25 10:23:53 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd[254]: Starting standard backup
Aug 25 10:23:53 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd[254]: Backing up to: /Volumes/Time Machine/Backups.backupdb
Aug 25 10:26:21 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd[254]: No pre-backup thinning needed: 100.0 MB requested (including padding), 279.56 GB available
Aug 25 10:27:51 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd[254]: Unable to rebuild path cache for source item. Partial source path:
Aug 25 10:41:06 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd[254]: Copied 305079 files (49.1 MB) from volume Macintosh HD.
Aug 25 10:42:21 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd[254]: No pre-backup thinning needed: 100.0 MB requested (including padding), 279.31 GB available
Any idea on how to resolve?
Thanks,
K

kieranroy wrote:
Hey...me again
Hi again. You seem to have really angered the god of TM, haven't you!
However, this morning, the incremental backup is taking forever. It's been stuck at "3.6MB of 6.7MB" for over 20 minutes. It would seem to me that 6.7MB should be pretty quick to backup.
Unable to rebuild path cache for source item. Partial source path:
This usually doesn't cause a real problem, as long as it's occasional.
Copied 305079 files (49.1 MB) from volume Macintosh HD.
This we see on occasion -- the crazy high file count, and very slow backup.
Aug 25 10:42:21 Kieran-Roys-MacBook-Pro /System/Library/CoreServices/backupd254: No pre-backup thinning needed: 100.0 MB requested (including padding), 279.31 GB available
Normally, TM will make a second, "catch-up" pass if changes were made during it's first pass. Usually this is very quick, but since the first one way very slow, this one may be worse.
Do you have any folders, particularly email mailboxes, with a very large number of files (thousands), that are actively being added-to or changed? There was a similar situation recently where an app named SpamSieve was putting messages into a "spam" folder, and the user never cleared it out. Clearing it out helped, but excluding it from Time Machine solved the problem.
Click here to download the TimeTracker app. It shows most of the files saved by TM for each backup (excluding some hidden/system files, etc.). I think it will only show completed backups, so you may not be able to find anything. But look at what's being backed-up to see if any of the files, even if there's only one, are in extremely large folders. If so, try excluding the folder (TM Preferences > Options).

Incremental backup time query?

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