OFFICE DATA LOSS

Hello ,My Name is azim and i am using an excel sheet which has whole year data and suddenly today is started giving the error "excel cannot open the file .xlsx because the file format extension is not valid" while opening the file.I
dont have backup of this file and i would loss all my data .Once i click ok then sheet is fully blank. Please someone can do the needful and provide some help for the same.

Go to File>Option>Advanced>Uncheck Ignore other applications that use Dynamic Date Exchange(DDE)
If the issue persisits, check the following article:
http://blogs.technet.com/b/the_microsoft_excel_support_team_blog/archive/2013/09/07/quot-cannot-open-the-file-because-the-file-format-or-extension-is-invalid-quot-opening-office-files.aspx
Some of our customers solved the issue by deleting the temp file found here:
C:\Users\%username%\AppData\Roaming\Microsoft\Excel\XLSTART
Tylor Wang
TechNet Community Support

Similar Messages

Chronic catastrophic data loss with Lion & servers

Auto-save and versions, when combined with multiple users and a server environment virtually guarantees catastrophic data loss.
Here's how you replicate it.
(1) Place a photo on a server.
For us, this is where we recommend people keep important files. Their desktop may be backed up with time machine, but the server is RAID 6 with hot spares, and on top of that is backed up every night. Much, much safer.
(2) Open that photo in preview. Crop it so that you can print it. Close preview. Notice it didn't ask you if you wanted to save?
(3) Open that file again. It's still cropped. The original? Gone. Choose "Revert to Saved" from the file menu. Notice the large number of empty windows on the right? Yup, you can't get back to the prior version, even though you never saved.
Now, as a network administrator, imagine the consequences of this for your network. Users accessing shared files and making changes they need, but not saving them because they don't need to be saved. Yup, their version is now THE definitive version for the entire network.
The ability to do non-destructive edits is something that computer users have been doing since, well, the dawn of computing more or less. Lion removes this. Now, add on top of that user mistakes in a network environment. User accidentally deletes all the text from a 24 page document. They don't know what to do so they close the app. Unless the backup has run since that 24 page document was created, it's gone. Forever. And ever. Amen.
Go to backups you say? What if the document isn't accessed for six months from when the user accidentally wiped it out. Hope your backup server is petabyte big, because otherwise that data is gone.
This is a huge, huge problem.
Joel

I am not an idiot. The very reason we are reporting this is that we are testing this and discovered it. It is not about "random people" changing things on the server. People with appropriate access can do catastrophic damage without even realizing it. Yes, I have also reported this via the Lion feedback.
Let me address some of the comments here:
> There is nothing to prevent someone on Snow Leopard from doing the same thing if anyone can save a document.
That's the problem. Nobody has to actually save to wipe data out with Lion. Versions _does not work_ on server volumes. I have tested this with Lion client and 10.6 server and 10.7 server. Same result. Massive data loss.
> Plus, any document over two weeks old would pop-up a big "locked" dialog if the user tried to modify it in Lion. You wouldn't get that before.
Great. Documents can only be inadvertently destroyed for two weeks. Not sure how this makes anything better.
>And why do you have Time Machine on the desktop instead of on the Server? It seems like it would more handy there.
The server is backed up, as are the clients. It's irrelevant to the problem being reported.
>You are the network administrator. Disable Preview and get your users a decent image editor.
Great idea! Until Photoshop supports versions. Microsoft has announced support for versions with office. I guess we'll have to disable that as well. Maybe we should try to fix the actual problem rather than just disabling software that used to work perfectly and moving on...
> The Versions feature is absolutely not appropriate for use in a multi-user context.
I agree. So do mac users stop using servers now? Doesn't seem like a good option.
> I find it hard to believe that any competent administrator would 1) upgrade clients to Lion this soon after release
I have no clients except my own on Lion at this point, for testing. This is exactly the kind of problem I need to trace down before I deal with huge issues from my users. Also, what happens when we buy new machines? Lion only...
> and 2) have versions enabled on shared disk.
We can turn off versions on a shared disk? I do not see any way to do this. Please enlighten me!
> 1) There is no evidence that the original poster has actully upgraded any client or is a network administrator.
I am a network administrator. This only happens with Lion and versions. I have tested this problem against both 10.6 server and 10.7 server. It exists on either.
> 2) Version is a feature of Lion, not the network. The scenario described by the original poster could occur on any non-HFS+ disk.
The problem is that versions _does not work_ on an AFP server, but acts as if it does. When you use "revert to save" you find that there are no versions. Not good...
Joel

External Drives for Mac Experiencing Data Loss with Maverick OS -- UPDATED FOR NOVEMBER 6, 2013

--- Updated November 6, 2013 ---
On October 30th, 2013 Western Digital informed registered customers of affected products via E-mail regarding reports of Western Digital and other external HDD products experiencing data loss when updating to OS X Mavericks (10.9). Our investigation to date has found that for a small percentage of customers that have the WD Drive Manager, WD Raid Manager and/or WD SmartWare software applications installed on their Mac, there can be cases of a repartition and reformat of their Direct Attached Storage (DAS) devices without customer acknowledgement which can result in data loss.
WD has been tracking this issue closely through our WD Forum and through our Technical Support hotline and the occurrence rate of this event has been very low. A specific set of conditions and timing sequences between the OS and the WD software utilities has to occur to cause this issue. Should this event occur, the data on the product can likely be recovered with a third party software utility if the customer stops using the device immediately after the OS X Mavericks (10.9) upgrade. WD will be issuing updated versions of these software applications that resolve this issue.
WD strongly urges our customers to uninstall these software applications before updating to OS X Mavericks (10.9), or delay upgrading until we provide an update to the applications. If you have already upgraded to Mavericks, WD recommends that you remove these applications and restart your computer. If you have already upgraded to Mavericks and are experiencing difficulty in accessing your external hard drive, please do not save anything to the drive, disconnect the drive from your computer, and contact Western Digital Customer Service at http://support.wdc.com/contact/.
--- Updated November 5, 2013 ---
There are reports of Western Digital and other external HDD products experiencing data loss when updating to Apple's OS X Mavericks (10.9). Western Digital is urgently investigating these reports and the possible connection to the WD Drive Manager, WD Raid Manager and WD SmartWare software applications.
Until the issue is understood and the cause identified, WD strongly urges our customers to uninstall these software applications on their systems before updating to OS X Mavericks (10.9), or delay upgrading. If you have already upgraded to Mavericks, WD recommends that you remove these applications and restart your computer. WD has removed these software applications from our web site solely as a precaution as we investigate this issue.
If you have already upgraded to Mavericks and are experiencing difficulty in accessing your external hard drive, please do not save anything to the drive, disconnect the drive from your computer, and contact Western Digital Customer Service at http://support.wdc.com/country/ for further assistance.
You can now download the WD Software Uninstaller. This utility will remove Mac WD SmartWare and WD Drive Manager software. You can find the uninstaller under any of the Mac Drive Downloads sections such as the My Book Studio below.
http://support.wdc.com/product/download.asp?groupid=124&sid=214&lang=en

I agree. After installing Mavericks I was troubleshooting and reinstalling drivers for days. Many Apps did not work anymore, although the updates slowly arrive. As total divergence of the old Apple philosophy, I had to use endless library cleaning terminal commands to get a new Canon network printer running again. Canon provided the procedures after updating from OS X10.6 to 10.7 already. Now it seems, that the first time I used the Super Drive (CD-DVD Drive) trying to burn an audio CD with baffling error messages (Drive already used..). After this, the RAID1 status of the two MyBook archives changed to JBOD. The changes of OS X10.8 to 10.9 I find unnecessary (iBooks could be an App, Maps we have already the same on other channels). Some changes are even a step back (calendar graphics), the so much more user friendly Office suite iWorks is free, but degraded an of limited use!MadOverlord wrote:
I have had multiple cases of data loss on WD drives since upgrading to Mavericks, and I do not use any WD software. I was using a 4-bay PROBOX USB3 enclosure with 4 independant drives, each with 1 volume, no RAID. I have managed to copy large files off the WD drive onto my MBP internal drive using the finder, and then find that they are not identical. This problem is intermittent, does not generate any Finder errors, and the drives all show 100% health via SMART. The configuration was rock-solid before Mavericks, and has trashed the directories of 4 drives since I upgraded last week. I am attempting to find a solid replication case for this, but it is difficult. I have not been able to replicate the issue on another 2-bay USB2 dock that I have (different manufacturer). One thing is clear: only one thing changed -- I upgraded to Mavericks.

There is no Data Loss!

Basically, any Pages file that has been modified and seemingly "overwritten" can be easily restored to its pre-5.0 state within Pages 5 by clicking File > Revert to > Browse All Versions and then selecting the previous version, clicking Restore and then closing Pages 5.0 without saving. That allows you to open the file in Pages '09 and delete Pages 5. Now everything is back to normal and you can continue using '09 until the feature set is restored.
I'm hoping people will continue to explore and verify this, but I've tried it myself and a few others have verified its validity. I started a thread yesterday but it quickly got buried in the swathes of complaints.
robogobo wrote:
Great! Hopefully this means everyone can get back to their old files and continue working in '09 until the feature set is restored to 5.0. Now we can all stop clamoring about Apple intentionally damaging users' work. I was 1000% sure that wasn't the case. After "Save As" was depricated, Autosave and Version History are part of a normal workflow (except for those who rejected the whole idea of auto save - but Apple didn't), which explains why files were not explicitly duplicated with the upgrade and no warning was issued.
Does this work for you, Peter? If so I hope you can see the value of actually using the product before jumping on the bashing bandwagon.
Karabuni wrote:
Seems to work - I've unplugged the external disk as well as turning off Time Machine. Old versions are there, and not only that, when the restored file is loaded into 5, it looks the same as it did in 4.3., whereas if just the latest one is opened, layout is, er, not right.
The "unrestored" file has layout errors, whereas, the "restored" one still looks OK when reopened, even after making a few changes. This might not be the case if a "removed" feature has been used, such as linked text boxes - they are there but not linked.
You will not be able to open this file in 4.3 if you make changes, as robogobo also said.
So, are the earlier versions inside the new one? Word docs have all sorts of old stuff inside if you open them in BBEdit, especially if the author has used an earlier letter to someone else as a template, and altered the text. Having looked at a 4.3 xml file there isn't any changed/deleted text or other obvious stored changes. So they must be somewhere else, I suppose.
The 5 files are zipped .iwa, and I haven't found anything that the system will allow to open them (unidentified developer).
robogobo wrote:
Could someone please verify this? Basically it would mean the transition from 4.3 to 5 is at least non destructive and we're dealing with a loss of features here but no data loss.
robogobo wrote:
Browse All Versions:
Now I hadn't tried this before, but it was on my todo list. When I first noticed problems with files opened in Pages 5.0, I was simply restoring files from Time Machine in order to get back to the original version for 4.3, thinking it was necessary for version history. But correct me if I'm wrong, Time Machine isn't necessary for browsing documents version history. Is that right? I just tested it and it seems to work with my Time Machine disk disconnected. Can someone verify this?
I just opened an old 4.3 document in 5.0, made some changes, saved and closed it. Then I tried to open it in 4.3 and of course it wouldnt open. So I opened it again in 5.0, went to File > Revert to > Browse All Versions and it opened up the interface, which looks like Time Machine (I always assumed it was) but I think it's not. Anyway, I went back to the old version, hit restore and then closed it without saving. I can now open it again in 4.3 in its original state!
Did everyone already know this? If it's true, then there isn't any permanent damage being done, and everything can be reverted to originals from within5.0. I think this is great news.

Jeff Shenk wrote:
If you upgraded directly from Snow Leopard to Mavericks, and never had Versions in Pages 4, can you still revert to the oldest version in Pges 5 and get a Pages 4 document?
The documents brough into Mavericks from Snow Leopard should still be considered the original versions before they're opened in Pages 5, so I think it would work. Probably best to open them in 4.3 on Mavericks first though, to be safe.
At any rate, data loss is only a problem if you have opened the only copy of a document with a new, untried application, and in that case, you are acting as though it isn't a very important document, anyway.
Couldn't agree more.

[DATA LOSS] I closed the Tab Groups and all my tabs dissapeared. How can I recover the tabs in Firefox 26? Would you please just delete this feature?

Thank-you in advance for reading all of this.
A slip of the mouse in trying to return to the left-most tab caused the tab groups feature to take over the window. I completely failed to comprehend what I was looking at and closed the thing by clicking the x because I damn sure didn't want what I was looking at. Undo close group? Of course not, I didn't want a group in the first place. Hey! My tabs are completely gone now! So in just a few steps all of which seemed innocent, I have lost all but ten of the tabs that were open, and those were only the most recent ten (and actually older tabs would have been more valueable than newer so insult on top of injury).
I don't think increasing the number of undoable tab closures is the answer. I think getting rid of the tab groups feature all together is the best way to go. I seem to have lost all the tabs I had open, irretrievably, and some of them had been open for WEEKS so they can't be reopened from history.
The tab groups feature is a data loss bug. Please remove it from the UX completely. If you have to figure out a way to grandfather people who actually have a tab group, fine but don't further vex me with it, please.
The reason this catastrophe has occurred is that your feature, was so discoverable that I activated it by mistake, and the UI after that had to be learned on the spot, yet was too complicated to learn. You really should withdraw it until you can figure out how to keep the UI for it from causing data loss such as I have experienced this morning.
Also, there may be other questions on this feature which are from a certain point of view the same as this one. It's hard for me to tell for sure. None of them had a true resolution so that's why I posted this one, also I'm seeking a specific fix, removal of the offending feature.
Why remove the feature? Because if I allow in my discussion the possibility of retaining it, it will stick around in its present and dangerous form until your team is done bikeshedding the new form it should take. Instead I want you to delete the feature and then require its champion to convince you that a new incarnation won't cause data loss before you allow it back in.
Fellow users, if you know of a way to recover all 50 lost tabs from an "undo close tab group incident", I would be grateful for that advice, but I would still believe the feature should be deleted. Some of the tabs have been retained for months so digging them out of the history is not practical.

I am not 100% certain but I am fairly sure development of this tab feature has ceased and it is likely to be deprecated. I am even less sure what the replacement will be.
Thus forum is not the place for discussing development issues or feature requests. (Developers do not use this site)
*You could comment using feedback <br /> https://input.mozilla.org/en-US/feedback
*Or try to find a developers forum or mailing list <br /> http://www.mozilla.org/about/forums/#general-development
I have not tried this and am not even using Windows at present but the tabs groups are stored as entries in the sessionstore.js files. Firefox has such a file plus sometimes numbered copies and a backup copy. Firefox will have re-writen these files but I suppose there is a posibility the Windows OS may have kept copies.
* see http://windows.microsoft.com/en-US/windows7/Previous-versions-of-files-frequently-asked-questions
* http://kb.mozillazine.org/Sessionstore.js Note the files are kept within the Firefox Profile
** Firefox Button -> Help -> Troubleshooting [open profile] (or some thing similar) is one method of locating the profile.
Find and backup any current sessionstore.js file. Consider also bookmark or otherwise recording anything you have open. Now find any previous versions and try putting them in Firefox's profile before restarting it.

Data loss popup for cancel button on overview page

Hi Experts,
Data loss popup generally appears on UI, when i try to navigate with out saving the changes. This is a standard SAP behaviour.
But, i come across the requirement where this data loss popup should also appear on clicking the 'Cancel' button on overview page on UI.
I understood that, this popup will be triggered by the methods ON_BEFORE_WA_CONTENT_CHANGE & IF_BSP_WD_EVENT_HANDLER~HANDLE_EVENT of the window impl class.
Please suggest how can i make this popup work in case of Cancel button as well.
Thanks....

Hi bkvs,
Usually when you click the "Cancel" button that means you don't want to save your entry... hence displaying the dataloss popup doesn't make really sense to me. However, you may want the user to confirm that he really wants to cancel.
So I would suggest to redefine the EH_ON_CANCEL method of your view, to display a simple confirmation popup before you actually cancel everything. This wiki will show you how to do it:
Creating popup message in webclient UI - CRM - SCN Wiki
Regards,
Nicolas.

Updating to ios 6.1.5 leads to data loss in several apps (bento, teacher tool)

After updating to ios 6.1.5 I have experienced severe data loss in several apps. Can I return to older version of ios to rescue data?

All you can do is restore from backup
To restore from backup see:
iOS: How to back up
If you restore from iCloud backup the apps will be automatically downloaded. If you restore from iTunes backup the apps and music have to be in the iTunes library since synced media like apps and music are not included in the backup of the iOS device that iTunes makes.
You can redownload most iTunes purchases by:
Downloading past purchases from the App Store, iBookstore, and iTunes Store

Data loss Lacie 500GB external drive_ disk utility changed partition!

Details of problem. I have a 500GB Lacie mini hub HDD which is used with an iMac angle poise. Recently it has been playing up- unable to access folders/files etc. and since I know the PSU fails on these items (capacitors fail -5V and 12V go haywire- already fixed another one - I have a 320GB with a mac mini setup) I removed unit from the imac and connected in place of the 320GB lacie on the mac mini, using the known good PSU. The iMac is running latest 10.4 and mac mini is running latest snow leopard 10.6.1
The Lacie spun up and mounted OK and I was able to access all files folders with no issue, so since I was keen to make sure it was 'fixed' I ran disk utility. It ran and said it verified and then I realised I hadn't run repair so re-did this. Big mistake!
It did the same run and said no problems found, but it then said something like updating partition! Horrified I waited and it seemed to finish or had finished straight away. Not sure. I looked at folders and yes main 2 items in place, but nothing showing below this. ****. It got worse. I ejected and tried to reconnect and low and behold it says drive needs formatting now. Disk utility even shows this 500GB as having 2.2TB of space, which I see in other posts is another issue.
I have important data backed up elsewhere, but there are a large number of files I do not have copies of and suspect there is a way to recover these. I have since seen all the 'data loss' guest account issues and wonder if this is yet another bug in snow leopard.
Have tried running Techtool Pro 5.0.6 to see if it can see the data but its not seeing anything. Will try Diskwarrior and others, but may well shelve to see if apple gets an os update released for data loss issues.
Any thoughts on how to recover? Anyone with a similar issue? I am pretty certain this is not a failed hard drive as it sounds 100% normal. Thanks for any help or guidance.

Thanks for all the comments recieved. V.K. made me re-evaluate what I had proved or not. I was fairly certain (not 100%) that the drive mech was OK, because the psu had failed, but should have proved drive mech was actually OK. So I removed the mech (as USB abd firewire can't do SMART etc.) and hooked up to an old G4 Powermac. I then found that the SMART verified, but had forgotten the 128GB limitation on older macs. So removed and got a PC to hook it up and run latest IBM_Hitachi drive fitness and other diags. (its a Deskstar HD and I have had almost zero issue with these drives over the years.) It checks out fine, so I was correct in my initial thoughts, only the PSU was faulty.
So back to my initial suspicions that Snow Leopard or disk utility has screwed things up, maybe a bug, maybe not. And I did run verify first and it said it was OK, only when I re-ran the repair did it then do a "partition update" (or whatever it said - should have done a screen capture - searched apple but can't find listing of all mesgs avail. must be in developers site I expect). So I am back at looking at how to recover, if at all possible, but as Alsoft have said this is not something Diskwarrior can do directly. Files must still be there just partiton map is now in a ... needs to be initialised mode. Not that I will do that.
So I guess summary is possible bug/funny in 10.6 and/or disk utility.
sounds like I will be contacting Alsoft now
may read up on partition map damage first, so I get a better picture of whats involved.
Cheers and thanks for all the help/ideas.
BTW - been using macs_pcs for decades now and helping friends & family fix things as and when. This is first time needed to post on forum as always found answers to questions I had previously. Must remember the old adage of not jumping onto new technology until it has bedded down I bet if I had hooked up to the old G4 Powermac I wouldn't be in this position. Thanks again.

What can I do simply to keep all my previous contents, (own pics, videos, etc.) on my previously authorized iPad on PC, but get a new authorisation and a right syncronization, without data loss with a new iTunes on my new Mac?

Friends,
I already had an iPad(1) and its full contents (not only the purchased items, applications from Apple, but my all own pics, videos, songs etc.) is normally syncronized with an authorized PC (Windows) computer.
Now, I've bought a new MacBook Air computer, and want to sell my PC. But I don't know how to transfer (or syncronize) all of the contents from my previous iTunes on PC to the new one on the Mac.
When I connected my iPad to my new MacBook Air, I promted, if I want to change authorization of my iPad to the MacBook.
But also got a warning, that the new iTunes will delete from my iPad all my previously syncronized items, pics, videos and music, with the previously authorized iTunes on the previous computer, expect the saved pics from the net.
What can I do just like that, simply to keep all my previous contents on my iPad, but have a new authorisation and a right syncronization, without data loss with the new iTunes on my new Mac?
Thanks a lot for your answer.
([email protected])

Here are some instructions that I have posted several times that may be helpful to you as they have been to others. You can simply ignore anything that does not apply or that you have already done.
As Alan stated above - transferring the iTunes library is the best first step. If you can transfer the iTunes library to the Mac, most of this will be unecessary for you to do.
Very Important ....
1. Authorize the computer.
2. Turn off auto sync in iTunes
3. Transfer purchases
The text in italics is from the other thread - non italics are my words.
The following was copied from this thread. This is essentially what you want to accomplish.
https://discussions.apple.com/message/11527071#11527071
1) Without connecting your iPad to your new computer, start iTunes. Click on iTunes. Click on Preferences. Click on Devices. Check the box next to "Prevent your iPod etc. from automatically syncing." Click OK.
2) Now connect your iPad to your computer and start iTunes.
3) When iTunes starts, right click on your iPad under Devices in the left column. Select Transfer purchases etc.
4) After it finishes transferring all your apps to your computer, right click on your iPad and select Backup your iPad.
5) After it finishes backing up your iPad, right click on your iPad and select Restore etc.
6) After it finishes restoring, left click on your iPad , then click on the Apps tab on top, and check the box next to Sync Apps, then click on Apply below.
If everything on your iPad looks good after the sync, go back and click on iTunes / Preferences / Devices and UN-check the box next to Prevent your iPod etc. The only other thing you may want to check is if your contacts, bookmarks, etc. are syncing correctly now. If not, go to the Info tab after connecting and make sure you indicate which features you want to sync with what sources.
Read this thread and the support links as well. There are apps that you can purchase that will allow you to transfer photos from the iPad to your computer. Look at Photo Transfer App in the App store and you can search for others as well.
https://discussions.apple.com/message/13016026#13016026
This support site will help you with transferring iTunes music to your new computer.
http://support.apple.com/kb/HT4527
One final note - you may want to leave auto sync turned off - but that is totally up to you. I never did use auto sync.

Data loss in original documents

Hi, we are running R/3 46C with DMS.
Typical functionality is as follows:
Using the online vault (ftp server), we checkin and out the originals from the DMS. We use MS Word/Excel as workstation applications to create/update the originals. e.g. the original is checked-out and opens as a MS Word document within the SAPGUI (Inplace DM configuration). A temporary copy is created on local workstation. Employee then updates the original and does a 'save and exit'. This checks the original back into the vault, deletes the local copy from workstation and exits the transaction.
The issue is as follows:
Person A opens the original, updates it and saves and exits. Person B (or the same person A) opens the same original document within couple of seconds or so after person A has saved and exited. In this case, person B doesnot see the updated content. So person B has no clue that the content was updated. If person B updates the content and saves it,
the content updated by person A is lost. There seems to be a performance issue resulting in potential data loss. The trace files for sapftp indicate good performance without any timeouts etc. between the workstation and the online vault (ftp server).
Not able to nail the cause. Any ideas or suggestions will be appreciated.
Thanks
Nirmal

Hi Iring,
I appreciate your suggestion. I think I understand it, however, in my case, the issue is after the original is checked into the vault. Once a user has updated the original and checked it into the vault (using 'save and exit' button), the transaction ends successfully, with a message "Document Info record <doc typ> <doc number> changed". This gives an impression that the original has been checked-in and the contents have been saved. If I open the same original within couple of seconds of the first save, the original does show as checked-in. However, intermittently, I would not see the content that was changed as part of the first save.
The ftp log shows no errors and indicates good performance.
Regards
Nirmal

Question: Will non committed persistence data loss if my application which is using Kodo/JDO crashes???

Hi,
I am very new to JDO and Kodo and I am still learning. I have a user
specification that requires no data loss when the application crashes. If I
am developing my application using Kodo for data access layer, when my
application crashes just because and needs to restart, what happen to all
the persistence data that have not committed to database??
Vivian

I am very new to JDO and Kodo and I am still learning. I have a user
specification that requires no data loss when the application crashes.
If I am developing my application using Kodo for data access layer, when
my application crashes just because and needs to restart, what happen to
all the persistence data that have not committed to database??If an app crashes, all current transactions will be aborted. There is a
difference between data loss and aborting the current transaction. Data
loss implies losing some persistent data -- data that resides in the
database. That won't happen with Kodo.
You will, however, lose any changes that have not been committed to the
database yet. This is a good thing. You absolutely DO NOT want an
unfinished transaction to be recorded, because that could violate the
integrity of your data. Consider a transaction that decrements from one
bank account and increments another to implement a funds transfer. You
certainly wouldn't want to record the decrement unless you are absolutely
sure the increment would be recorded too!

Data loss in the secure file transfer using java

Hi,
My java Appllication uses the sftp(secure file transfer protocol) for file transferring. when the load is high like 150 GB , data loss occuring for some files especially last chunk of data is missing.
Core file transfer code
while (true)
int read = bis.read(buffer); //Reading bytes into the byte array (buffer) from network stream (bis).
if (read==-1) {
break; //Break the loop, if there are no more bytes available in the InputStream.
bos.write(buffer,0,read); //Writing the same number of bytes what we read into buffer byte array into OutputStream
complete.update(buffer,0,read); //Giving the same number of bytes what we read above to the checksum calculation.
bytesSoFar += read; //Incrementing the bytes that we have read from the source.
//if the bytes transferred are equal to the source file size
If (bytesSoFar == fileInfo.getFileSize().intValue())
// Calculate the file checksum.
// Update DbAuditLog with checksum and no. of bytes read
else
// Update DbAuditLog with no. of bytes read
bos.flush();
Please help , why the data loss is happening when the big size files transfer
Note:
1.150 gb not a single file multiple files.
2.SFTP no java specific API, So connection is happening through java .io.sockect connection

so, if you are not getting any exceptions, yet the data is incorrect, it sounds like you are having actual network issues. i'd start looking at things like the actual network cards in the computer as well other equipment involved in the transfer. since you are not getting exceptions, the network stack obviously thinks nothing was lost over the wire, so either the actual hardware has issues, or the network stack, or the issue is on the sending end. the last possibility is that the client is somehow munging the data it is sending. do you control the client code? if so, i'd start checking the client side code for bugs (and/or post it here).
also, i'm assuming that all of the variables included in your original code are thread local (you aren't sharing any of those buffers/streams/etc between multiple threads).

When is the Next update of IOS..? ****** of with Data Loss issue

I am using Iphone 4 for past 2 years in India on Dococmo Network, since after the update of IOS 5 and 5.0.1 I
am FAcing the frequent Data loss in Mobile...!!
Time beign i can over come it by turing off the cellular connetion to on and off mode where it resetting the data connection...!!!

Since you haven't bothered to describe what this mysterious "data connection issue" is, we have no way to confirm or deny your statement that the problem is widespread.
The fact remains, you're using it on an unsupported carrier.
If you'd like to try and describe WHAT THE PROBLEM IS instead of getting defensive about it, we might be able to help. Otherwise, your initial question has been answered. No one here can tell you when the next update to iOS will be released.

Data Loss in DB to DB Transformation in ODI

Hi,
I am facing data loss when I am trying a transformation for a DB to DB mapping in ODI.
I have two tables in two different schemas with the following specifications. In ODI designer model of i have put the type of place as number in target and place as varchar2 for source and accordingly done the mapping.It works successfully when i am putting the data as ('12', 'ani', '12000', '55').
Now for testing I am giving the datas as ('1', 'ani', '12000', '55') and ('2', 'priya', '15000', '65t') and when I am executing it is giving the error as expected(ORA-01722: invalid number) in the task (Insert flow into I$ table). My C$ table is populated with the datas from source. But E$,I$ and target tables are not populated with the data.
Now when I am puttting data in source as ('3', 'shubham', '12000', '56') and ('4', 'shan', '12000', '59') it is getting completed successfully , datas from C$ tables are deleted and data is inserted into the target table.
Now my question is where are the datas ('1', 'ani', '12000', '55') and ('2', 'priya', '15000', '65t') gone. If they are lost what is the recoverable table so that no data loss takes place.
The codes for source and target tables are as follows:
source table code:
CREATE TABLE "DEF"."SOURCE_TEST"
    "EMP_ID"   NUMBER(9,0),
    "EMP_NAME" VARCHAR2(20 BYTE),
    "SAL"      NUMBER(9,0),
    "PLACE"    VARCHAR2(10 BYTE),
    PRIMARY KEY ("EMP_ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE "USERS" ENABLE
inserted data:
INSERT INTO "DEF"."SOURCE_TEST" (EMP_ID, EMP_NAME, SAL, PLACE) VALUES ('1', 'ani', '12000', '55')
INSERT INTO "DEF"."SOURCE_TEST" (EMP_ID, EMP_NAME, SAL, PLACE) VALUES ('2', 'priya', '15000', '65t')
Target table code:
CREATE TABLE "ABC"."TARGET_TEST"
    "EMP_ID"     NUMBER(9,0),
    "EMP_NAME"   VARCHAR2(20 BYTE),
    "YEARLY_SAL" NUMBER(9,0),
    "BONUS"      NUMBER(9,0),
    "PLACE"      NUMBER(9,0),
    PRIMARY KEY ("EMP_ID") USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT) TABLESPACE "USERS" ENABLE
Thanks.

So, first you have data in "DEF"."SOURCE_TEST".
You then run your interface, and the data is moved into "ABC"."TARGET_TEST" if the interface executes successfully with no errors.
Correct? - no data loss
But if you're saying that you need to handle records which are going to cause the "invalid number" error, then you should read up on 'flow' and 'static' control and how to flag errors before loading them. Flow and Static Control allows ODI to identify erroneous records prior to loading - they'll be put in the E$ table for you to deal with later.
If you haven't already, I'd encourage you to take a look at the documentation on this:
Implementing Data Quality Control

When export mode is full and userid is system, data loss happens.

Hi!
I'm running Oracle 7.3.4 On HP-UX. I have problem when I try to export full my DB.
I make a php program(a kind of ticket management program) and it use WEBDB's data in Oracle.
Now, I export my WEBDB's data through userid="WEBDB" and the result of log is
Connected to: Oracle7 Server Release 7.3.4.3.0 - Production
With the distributed and parallel query options
PL/SQL Release 2.3.4.3.0 - Production
Export done in KO16KSC5601 character set
. about to export WEBDB's tables via Conventional Path ...
. . exporting table IMSI
EXP-00008: ORACLE error 8103 encountered
ORA-08103: object no longer exists
. . exporting table TEMP 334 rows exported
I export full my DB through user="SYSTEM" and the result of log is
. about to export WEBDB's tables via Conventional Path ...
. . exporting table IMSI
EXP-00008: ORACLE error 604 encountered
ORA-00604: error occurred at recursive SQL level 1
ORA-08103: object no longer exists
. . exporting table TEMP 331 rows exported
The num of TEMP's row is 334 rows. I created "IMSI" table 2~3 days ago.
What a terrible row & table loss!
Please, what do I do? I need to do export full and no data loss...

If its anything like exporting in Rel 2, you will have to export using SYS, not another user.
Hope that helps ;)

OFFICE DATA LOSS

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