Why backup is so big ?

Hello!
I've migrated some simple application from MySQL to Oracle XE. Application works fine, but backups created with backup.sh script are huge!
MySQL database backup was less than 2MB, but Oracle XE backup of the same database is about 1GB: 500 times more.
Is there any way to make smaller backups ? I need something simple like output from pg_dump or mysqldump.
best regards
Jarek

MySQL database backup was less than 2MB, but Oracle XE backup of the same database is about 1GB
I don't know if the two backups are comparable, but with backup.sh script you won't ever have a so small backup : it makes a full RMAN backup, and to reduce the backup size you have two choices :
1. Modify the script so that it does a compressed backup
2. Create your own script.
Said that I obviously prefer #2, if you want to modify the script, you can change all lines with "backup as backupset device type disk database;" to "backup as compressed backupset device type disk database;"
FYI, the difference, for my XE database, is as follows :
Normal :
-rw-r----- 1 oracle dba 790650880 6 lug 15:25 XE_07oe2pan_1_1.bck
-rw-r----- 1 oracle dba 9830400 6 lug 15:25 XE_08oe2pb6_1_1.bck
Compressed :
-rw-r----- 1 oracle dba 176455680 6 lug 15:32 XE_comp_09oe2pnl_1_1.bck
-rw-r----- 1 oracle dba 1097728 6 lug 15:32 XE_comp_0aoe2poo_1_1.bck

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Kalman Toth Database & OLAP Architect
SQL Server 2014 Database Design
New Book / Kindle: Beginner Database Design & SQL Programming Using Microsoft SQL Server 2014

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I noticed my backups to increase quite a bit over the last few days. I also noticed so many posts on why are backups taking so long, what can I do (only solution given is to click x or modify so that backups are not done, etc). Well to answer all those that want the "real" answer, I decided to do a few minutes of research and share what I've learned. I have seen nothing at all on google or anywhere else about the recommendations I'm suggesting, but from my experience I think it will answer 99% of all the backup threads on this site.
All your backups are being stored in:
XP: C:\Documents and Settings\(Your Name)\Application Data\Apple Computer\MobileSync\Backup\
Vista: C:\Users\*Your User*\Appdata\Local\Apple Computer\
Mac: ~/Library/Application Support/MobileSync/Backup
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The problem here is apps will continue to grow, become larger, more trailers, movies, songs embedded inside apps, etc. This problem is only going to grow. The additional problem is that they can say they have tweaked the backup programming to make it faster, just like they did in 2.0.1, but backups seem slower because there are newer better more awesome apps out!! Well that's why it doesn't look like it's faster but it's slower! They will keep doing this as opposed to solving the root of the problem by recoding the whole backup foundation as I'm suggesting from above. Backups will forever take longer and longer and longer and longer. That is what you have to look forward to. My guess is that they are not going to fix the foundation of how backups are done anytime soon having a good idea how they are doing this one. They would have to do a massive overhaul of the whole backup code, which basically they would have to admit that all the time coding this way was a waste and they see no profit from it and we deal with it just by pressing x sometimes. We can complain all we want, but for awhile if you don't want long backups, this is the real solution. What's funny is writing this email took much more time than figuring out what apple is doing, but I think this will help many apple iphone users. Let me know what you guys think.

Supposedly apple made backups slightly faster on 2.0.1, but like I said in my original posting above...it will get worse and worse because of the apps.
Just to verify and you could do this yourself. Right before you plug in to sync and it auto starts the backup process do this...go to the folder where all the files are as mentioned above, sort it by date modified. Add a refresh button on the toolbar. Then start the sync/backup, keep refreshing and you see the files getting updated. There are even temporary files apple's backup process creates that you don't see that keeps adding to a file, so even if you see one file updated, you might see it updated a few times until the whole backup for that file completes.
Here are my stats:
For me this time it took 27 minutes (earlier it took 2 minutes, but like i said with updates to apps, more apps, depending on types of apps, your computer speed, etc it will increase.
For me: In 27 minutes, it updated 1707 files with a total size of 82.8MB. There are a ton of computers that are much faster than mine that I'm sure would cut the minutes down. I have 6 pages of apps, but like I mention above, that doesn't matter because you could have one app that has 400 files with a large size. I would be interested in others posting their results, maybe in this format:
27min 1707files 82.8MB Pentium4HT Antivirus and other large programs running in background.
If you are interested you can even download program that will decrypt these files so you can view them in more detail...for mac, for instance, there is something like this: http://mac.softpedia.com/get/iPhone-Applications/Tools-Utilities/iPhone-Backup-D ecoder.shtml It allows you to backup and modify. It may help you decide what is taking your backups so long and you can decide if it's worth having that app installed versus not having a good backup. You can also pick out you sms backup file, contacts backup file, etc for those really interested in having backups of those specific files.
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Iphone 4s update stopped, then the backup was too big!

I was installing the latest update on my fiances iphone 4s. Then it stopped and I got some text saying the update wouldn't go. The phone was then locked with and I was prompted to connect it to itunes. Also hade a message about the simcard not being correct, that disappeared though. Then I had to do a backup and reset the phone. "Ok", fine I'll use the backup I just made - but no! Now the back up was too big! Bit above 14 Gb which I after som googling understand is more than "the basic" package? Anyway, I didn't have any recent backups so now I got the evil eye from my fiance as I write… is this solveable? What happened? Did the update get mixed into the backup thus making it a bigger file? The phone was almost full when I started the update… I do have a backup from september which is abot 12 Gb. Can I use this somehow?

Well, the update was aborted. Can't remember the exact error message and I can't produce it again obviously. But what happened next was that I was prompted to connect it to itunes and restore it, there was this symbol on the screen with a wire going to itunes.
Now it's just telling me there isn't enough space to backup from the one I want. I know what folder it is in, the application, mobile sync, backup. That folder is more than 14 Gb.
I cannot be more specific I'm afraid… But I mean, the info is there, in that folder bigger than 14 Gb. I can access the pictures, look at every one of them… Frustrating…
Haha! That's a good link!
cheers!

Why Backup database then backup archivelog from time...

Dear Experts,
I found in one of our rman scripts the 2 following statements:
backup database;
backup archivelog from time 'SYSDATE -8';
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Why this separate statement for the archivelog ? I find it redondant but is it...
Any advice is as usual greatly appreciated.
Best Regards,
Guillaume

You are right. The use of backup database plus archivelog; is much better and you are sure that you backup all archived log you need.
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Bye, Aron

Why backup fail

I use Oracle9i,and I create two database,such as "TestDB" and "RealDB",I use RMAN to backup datafile of TestDB,I use following command to backup:
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Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
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RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
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RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 12/05/2005 14:25:08
RMAN-06004: ORACLE error from recovery catalog database: RMAN-20001: target database not found in recovery catalog
I have connected to database 'TestDB',why oracle say 'target database not found in recovery catalog'? I am puzzled with it very much. How to backup my datafile?
Thanks in advance!

Sorry,I make a mistake by spelling just now,following is correct post,I am reading the part Backup of the book "oracle9i Database Fundamentals II",Please help me solve follow question:
I use Oracle9i,and I create two database,such as "TestDB" and "RealDB",I use RMAN to backup datafile of TestDB,I use following command to backup:
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Recovery Manager: Release 9.2.0.1.0 - Production
Copyright (c) 1995, 2002, Oracle Corporation. All rights reserved.
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connected to recovery catalog database
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RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
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RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of backup command at 12/05/2005 14:25:08
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I have connected to database 'TestDB',why oracle say 'target database not found in recovery catalog'? I am puzzled with it very much. How to backup my datafile?
Thanks in advance!

Why backup files are all 6..5 GB size?

hi
I'm taking backup using rman and backup of my database divides into 6.5GB pieces? Why it's so?

RMAN> show all;
using target database control file instead of recovery catalog
RMAN configuration parameters are:
CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default
CONFIGURE BACKUP OPTIMIZATION OFF; # default
CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default
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CONFIGURE DEVICE TYPE DISK PARALLELISM 1 BACKUP TYPE TO BACKUPSET; # default
CONFIGURE DATAFILE BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE ARCHIVELOG BACKUP COPIES FOR DEVICE TYPE DISK TO 1; # default
CONFIGURE MAXSETSIZE TO UNLIMITED; # default <-- This is required parameter.
CONFIGURE ENCRYPTION FOR DATABASE OFF; # default
CONFIGURE ENCRYPTION ALGORITHM 'AES128'; # default
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Regards.

Why backup

This is a suggestion for apple. I have a lot of stuff on my Macbook Pro. And a lot of music. When I delete all my movies I am left with 18.9 GB. I would pay extra to have the music I bought from iTunes which is most of my 4000+ songs archived on apple server. Why should I have to backup my music on my computer or an external hard drive when apple, I assume, as a state of the art backup system themselves. It would also be a good way for client to use iTunes and for the music industry since you could only access music you paid for.
So for me it's a win, win, win & win solution.
Patrick W.

*Why should I have to backup my music on my computer or an external hard drive when apple, I assume, as a state of the art backup system themselves.*
They are your files. If Apple were to allow re-downloads they would have to pay the recording companies again to re-downloading them. Its how the licensing works. Do you expect Microsoft to backup your documents? After all you can buy office online. Backing up data is an individual responsibility especially when it is your data.
Apples serves have backups, but that is very different since their data exist in multiplicity on their server farms.
*It would also be a good way for client to use iTunes and for the music industry since you could only access music you paid for.*
Why should Apple be responsible for your stuff? The whole point of iTunes is that you own the content you buy. For that to happen the files must exist on your hard drive in its entirety. If the music were to live on Apples side, you would be "renting" your music. Something that nobody wants.
Point of the story. Storage is real cheap. You can get over a quarter of a terabyte of storage for about $100. Its an important investment for your important information.

Why backup gets corrupted?

I did a backup from my iphone and now i can't get it to the new one, it says its Corrupted, why it's that? i need to get all my pictures and sms

One thing to check is to be sure your new device has the vary latest version of IOS. If the old device had the latest version when the backup was made and the new one is even just one point version behind (new devices may sit on shelves a while and not get updated), then you can get a compatibility error.

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