Overwriting file without damaging

Hi there,
I have a List<> in java which I XMLSerialize into a file. This file holds some data which gets updated frequently. If I overwrite the file every time there is a possibility that I may damage / lose the critical file. What is the best way to handle this. Move the old file to .bak, create the new file ?. But if the operation gets interrupted then I may end up with no file. So what is the best practice.

josephj1989 wrote:
This file holds some data which gets updated frequently. Where frequently means what?
And what exactly updates it? Specifically how many applications?
And what happens if data gets lost?

Similar Messages

Exporting CSV can overwrite files without warning

Warning about an undocumented, automatic deletion of files by Numbers.
Export a iWork'09 Numbers (Version 2.0.5 (368)) document (with 2+ sheets) as a CSV with the same name as a folder in the destination and WHAM!
Yes, WHAM - it deletes all files in that folder with no warning (and they are not sent to Trash, oh moan, on moan).
A scenario - MyData.numbers (with 2+ sheets) stored in a MyData folder on the Desktop. Open it, export as CSV to Desktop, it deletes everything in folder including itself and replaces them with Sheet 1-Table 1.csv, etc. There is no warning this will happen.
If there is only one sheet, it will create a MyData.csv on the Desktop and leave the folder alone. If you do it again with one sheet, it will warn you the file exists.
If you repeat it with a 2+ sheet document again, there is not warning, this time csv files in the folder will be replaced.
This is horrid, unruly behaviour and cost me a huge amount of time repairing the damage.
There is nothing in the user guide to prepare me for this unhappy event.
You have been warned. Apple please fix this.

I must say that you are right on one point.
Even if I feel that this format is the worst ever invented, I exported many times Numbers documents in csv format. I never go the described behavior.
So, as I am honest, I created a folder with the same name than the stripped document's one.
When I asked the app to export it, the save dialog displayed the default name : azertyuiop.csv
As the folder was named azertyuiop, I was sure that there will not be any kind of problem.
I was wrong and you were right.
The result was not a folder azertyuiop.csv but the folder azertyuiop.
Of course, I decided to check that I wasn't fooled by my memory.
I made an other attempt with the name azertyuio.csv.
This time, there was no existing folder. I was sure that I will get the object azertyuio.csv
It's what my memory was repeating me.
Alas, the result was a folder named azertyuio.
So, I stop this message here and enter the Bug Reporter area.
Yvan KOENIG (VALLAURIS, France) mardi 14 juin 2011 17:25:01
As my Internet connection is in maintenancecr, I was unable to post it at the date_time used in my signature.
So I had time available to preparer a bug report.
Here it is :
Bug ID# 9608202.
Summary:
Awfull behavior of Numbers
Steps to Reproduce:
Create a Numbers document with several tables.
Export it as csv.
The Export dialog offer a name, say azertyuiop.csv
Expected Results:
Several users and myself assumed that we will get an object named azertyuiop.csv containing one csv file for every existing table.
Actual Results:
in fact, what we get is a folder named azertyuiop (without the name extension displayed in the dialog)
Worse, if a folder already exist with this name, THERE IS NO WARNING ISSUED.
So, the entire content of the existing folder is destroyed.
It’s really the worst kind of bug which I may imagine.
Regression:
Triple check that there is no existing folder with the same name than the document to export.
Or no longer use the dedicated menu when we want to export as csv but trigger this AppleScript which will take care to build a unique name.
--{code}
tell application "Numbers"
          tell document 1
                    set dName to name
                    set dPath to path
          end tell
end tell
if dPath ends with ".numbers" then
          set barePath to text 1 thru -9 of dPath
else
          set barePath to dPath
end if
set csvPath to barePath & (do shell script "date +_%Y%m%d_%H%M%S.csv")
tell application "Numbers"
save document dName in csvPath
Yes, it's foolish but if the document contain several tables,
the result will be the folder azertyuiop_20110614_174726.
Only the enclosed files will be named table 1.csv, table 2.csv…
end tell
--{code}
Yvan KOENIG (VALLAURIS, France) mardi 14 juin 2011 21:12:17
iMac 21”5, i7, 2.8 GHz, 4 Gbytes, 1 Tbytes, mac OS X 10.6.7
Please : Search for questions similar to your own before submitting them to the community
To be the AW6 successor, iWork MUST integrate a TRUE DB, not a list organizer !

Overwrite files BUG! Save PDF to Web Receipts Folder

In Safari, I will often want to save receipts of bank transactions. So I hit Command-P to print, then in the PDF menu button, I'll choose "Save PDF to Web Receipts Folder."
When I look in my Web Receipts folder, it has saved the file, but if there was already a file there with that file's name, the old one is replaced by the new one. I found this out the hard way, as my bank's page title is always "National Bank," and Safari uses the page title as the file name. So instead of accumulating receipt PDFs there, I merely had the most recent one.
This is certainly a bug: the Mac shouldn't be overwriting files without telling me. If it's going to save PDFs in the Web Receipts folder, then I should have the option to choose a name or approve the name that it generates from the HTML title.

Yes I agree this is an intentional bug.
Other things you can do to get around this issue:
1) Disable the "Save PDF to Web Receipts.workflow" located at /Library/PDF Services. This is at the root level of your disk and you will need Admistrator level authority to accomplish this task.
2) After you disable the workflow you could build your own without the: "with replacing" (save file) option enabled in the script. However, I believe this will not work, as you are already in a dialog box (printer), and the script will generate an error, and prompt a dialog box for you to enter a new name. I am not sure if this is the conduct, as I do not use this workflow or "feature."
3) After you disable (or just plain not use) the above workflow: Instead create a folder in your Home Directory called "Online Receipts" or whatever memorable name you like. You can place this folder anywhere.
Next, navigate to ~/Library/PDF Services (that is the folder in your Home folder, not at the root level as in (1) above. If this folder is not there, create it.
Next create and drag an alias of your "Online Receipts" folder into this PDF Services folder.
The next time you pull up a print dialog, and hit the PDF button, you will see this newly created folder in the menu. Just select it to save a PDF of your document to it. Files with identical names will be handled by the Finder's naming convention: (eg. file.pdf, file 2.pdf, file 3.pdf, etc.) and no files will be overwritten.
I hope this helps,
Zac
PBG4, iMacs & 99-44/100 wireless Mac OS X (10.4.3)

How can I delete damaged picture files without opening iPhoto?

I was downloading a few pics from my roommates professional-quality camera (I'm assume the file sizes are huge) and, of course, I had to download all 150 or so, instead just the few I needed. Anyway, I got a message that some of the files were "damaged" and couldn't be downloaded. Now, when I open iPhoto it either just locks up or shows some of the files downloaded, doesn't show others, and then locks up. So, what I need to do is just delete all pictures from that date without opening iPhoto .... any ideas how to do this?

1 - In the future if you want only certain photos use image capture (in your applications folder) - with it you can selective load photos
2 - try rebuilding your library - launch iPhoto while depressing the option (alt) and command (apple) keys and use the first three rebuild options
Do not use the finder to modify the contents of the iPhoto library
LN

HT201612 When I installed Windows on my Macbook I allocated too much disk space to Windows, thus reducing the disk space available for MAC OS 10.6. Can I reallocate disk space without damaging existing Mac aplications, files, etc? Thank you.

n I use Boot Camp (Assistant) to change the percentage of disk space allocated to each, without damaging existing MAC applications, files, etc.? Thanks in advance.

make sure Windows will also have the room for updates, cache, page, hibernation, and growth with 20% free space; and Mac should also have 20% or more after accounting for growth.
Spend the $19 and save the headaches with CampTune but backup both - CampTune should help with that chore also but also TimeMachne and clone OS X.
Paragon CampTune for Mac

File is damaged and can't be repaired error

I was at the IRS forms page, downloaded and printed some forms, but when I tried to download and print the instruction and tax chart pages, I began getting 'file is damaged and can't be repaired' error. I upgraded my free Reader to version 9, rebooted the computer, and tried again with the same results. I also deleted my internet (Windows XP) history and temp files (but not the cookies), and that didn't help either. I contacted live help from IRS but agent said he was having no problem getting the files to show up so it's something to do with my system. I tried downloading the files to my computer, but again when I tried to open them, got the same error. What could be wrong?
I did have a window pop up from Adobe during the last print out stating that that page was not going to display properly, but in fact it did, and the very next .pdf file and every one since then has now given an error message so I'm unable to get any more of the .pdf files I need.
Any suggestions or help will be much appreciated...
AJH

I think I resolved the problem....I had version 5 installed prior to getting the update of version 9 without realizing that both being installed at the same time would interfere with each other. I had assumed the new version would 'overwrite' the old one. I uninstalled everything (both versions) and saw that version 9 indicated AIR in the Add-Remove Programs list. When I rebooted after uninstalling both, I opened the folder on my desktop that version 9 put in there, opened another folder called 'Reader' and installed ONLY the version 9 which now shows in Add-Remove Programs as Adobe Reader 9 instead of AIR and rebooted again. Went back to the IRS site, and am now printing just fine the documents I needed.
I am going to assume that the older version 5 was not able to view and print some of the documents there since the IRS site probably uses updated versions and that it was the source of my problem since even with the newer version 9, I was experiencing the same problem, and not the AIR file I noticed in Add-Remove Programs.
Although no one was responding to me (not your fault since it was only a short time ago that I posted this problem), I am posting my results so anyone else with this problem will know how I resolved it.
AJH

There was an error opening this document. The file is damaged and could not be repaired.

Good Day all
When busy doing internet banking on www.absa.co.za and I try to print a confirmation, I get the following error message: "C:\Documents and Settings\%user profile%\Local Settings\Temporary Internet Files\Content.IE5\%folder name%\%file name%.pdf
Could not open file.
File not found."
I've managed to locate the actual file that it's looking for, but when I try and open the file using either Adobe or Foxit Reader, I get the following error message: "There was an error opening this document. The file is damaged and could not be repaired."
I've un-installed Adobe and installed version 9.1 for this particular user. This happened a while ago and then an un-installation and re-installation of Adobe solved the issue. This time, unfortunately, it didn't. I then un-installed Adobe and tried again, UNSUCCESSFULLY. So I loaded Foxit Reader, also without any success.
If there's anyone out there who could possibly help, please do so... It's extremely urgent.
Please find the errors attached as well.
Regards,
ME

I contacted the company and they asked me to try using another browser, which I did... and using FireFox worked
thanks for the help ʇɐb ɹəuəllıʍ
cheers!

Trouble opening pdf's - I have received several pdf's from a friend via e-mail (Thunderbird). Some of them open just fine but others give me the message: "There was an error opening this document. The file is damaged and could not be repaired."

Trouble opening pdf's - I have received several pdf's from a friend via e-mail (Thunderbird). Some of them open just fine but others give me the message: "There was an error opening this document. The file is damaged and could not be repaired." My friend made sure that the files in question opened without issue on his computer (a PC). Further, I was able to open one of these "damaged" files on my Android phone, but I cannot open them on the Macbook Air. Any help would be greatly appreciated.

Back up all data.
Triple-click the line of text below to select it, the copy the selected text to the Clipboard (command-C):
/Library/Internet Plug-ins
In the Finder, select
Go ▹ Go to Folder
from the menu bar, or press the key combination shift-command-G. Paste into the text box that opens (command-V), then press return.
From the folder that opens, remove any items that have the letters “PDF” in the name. You may be prompted for your login password. Then quit and relaunch Safari, and test.
The "Silverlight" web plugin distributed by Microsoft can also interfere with PDF display in Safari, so you may need to remove it as well, if it's present.
If you still have the issue, repeat with this line:
~/Library/Internet Plug-ins
If you don’t like the results of this procedure, restore the items from the backup you made before you started. Relaunch Safari again.

SSRS PDF Export. There was an error opening this document. This file is damaged and could not be repaired

Hello,
I just experienced this problem, and was able to successfully mitigate. I wanted to share my experience and Solution.
The problem started with the following error after succesfully exporting a PDF Document. "There was an error opening this document. This file is damaged and could not be repaired."
This is only applicable if you can still export and open SSRS Reports to other formats. Go to the Log files of the SQL Instance. In my particular case I used the Default MSSQL instance: C:\ Program Files\Microsoft SQL Server\MSRS10_50.MSSQLSERVER\Reporting
Services\LogFiles
The Folder will begin with MSRS (SRS is for SQL Reporting Services)
Sort the files by date modified and check for the most recent log file: ex. SQLDmpr0000.log The 0000 will be the incremental amount of errors you have experienced in SRS. Check for the following error:
"System.DllNotFoundException: Unable to load DLL 'T2Embed': Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"
Below is a sample from the log.
reportrendering!ReportServer_0-1!1b78!02/07/2012-11:56:03:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.UnhandledReportRenderingException: , Microsoft.ReportingServices.ReportProcessing.UnhandledReportRenderingException:
An error occurred during rendering of the report. ---> Microsoft.ReportingServices.OnDemandReportRendering.ReportRenderingException: An error occurred during rendering of the report. ---> System.DllNotFoundException: Unable to load DLL 'T2Embed': Access
is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
   at Microsoft.ReportingServices.Rendering.ImageRenderer.FontPackage.TTGetEmbeddingType(Win32DCSafeHandle hdc, UInt32& status)
   at Microsoft.ReportingServices.Rendering.ImageRenderer.FontPackage.CheckEmbeddingRights(Win32DCSafeHandle hdc)
   at Microsoft.ReportingServices.Rendering.ImageRenderer.PDFWriter.ProcessFontForFontEmbedding(PDFFont pdfFont, Dictionary`2 embeddedFonts)
   at Microsoft.ReportingServices.Rendering.ImageRenderer.PDFWriter.EndReport()
   at Microsoft.ReportingServices.Rendering.ImageRenderer.PDFRenderer.Render(Report report, NameValueCollection deviceInfo, Hashtable renderProperties, CreateAndRegisterStream
createAndRegisterStream)
   at Microsoft.ReportingServices.Rendering.ImageRenderer.RendererBase.Render(Report report, NameValueCollection reportServerParameters, NameValueCollection deviceInfo,
NameValueCollection clientCapabilities, Hashtable& renderProperties, CreateAndRegisterStream createAndRegisterStream)
   --- End of inner exception stack trace ---
   at Microsoft.ReportingServices.Rendering.ImageRenderer.RendererBase.Render(Report report, NameValueCollection reportServerParameters, NameValueCollection deviceInfo,
NameValueCollection clientCapabilities, Hashtable& renderProperties, CreateAndRegisterStream createAndRegisterStream)
   at Microsoft.ReportingServices.ReportProcessing.ReportProcessing.RenderFromOdpSnapshot(IRenderingExtension newRenderer, String streamName, ProcessingContext
pc, RenderingContext rc)
   --- End of inner exception stack trace ---;
If you notice the error states that T2Embed.dll access is denied. In my case this due to a hotfix installed by Microsoft:
MS11-087: Vulnerability in Windows kernel-mode drivers could allow remote code execution: December 13, 2011
Be advised, in order to fix your problem and render pdf's, a vulnerability shall be created.
To fix this issue and allow the export to PDF work correctly, you must give the system Read/Execute Permissions, and Built-in\Administrators Full Control.
Go to Windows\System32 and find the T2Embed.dll Go to Security and modify the permissions as listed above. Do the same to the T2Embed.dll in the SysWow64 folder.
Restart Reporting Services and you will be able to export to PDF.
Best Wishes!
Mariano
www.lucontech.com

I'm not convinced this is the exact cause of the issue. I will check my log files to see if I find anything like what you described. However, I get this error when a particular user tries to do a "print preview" from a custom button. The
code builds a ReportViewer object, sets the ReportPath, etc.
The reason I'm not convinced is because we have a separate reports page that has the report viewer embedded into it. If the user generates the report that way and exports to PDF, Word, etc...the user can generate the file and be on their way. As
soon as the user clicks our "Print" button on the page without the ReportViewer embedded, the above mentioned error occurs.
UPDATE: Perhaps we have a different problem since my issue is from a custom button. I found the solution
here and confirmed the solution with the customer. It had to do with the code using Response.Flush() instead of Response.End().
One thing I noticed before I implemented the change: When you would close the PDF, it would ask you to save changes to the PDF. After implementing Response.End() instead, that prompt went away. No doubt it has to do with the differences between
how Response.Flush() and Response.End() handle the stream returned.
Anyway, posting in case someone has the same issue.

Acrobat 11 there was an error opening this document. the file is damaged and could not be repaired

we are receiving an error when opening certain pdfs saying "there was an error opening this document. the file is damaged and could not be repaired"
i've tried a few things to fix this issue with no luck
tried on a brand new windows 7 install without any added software like anti-virus software, etc
tried on my home pc (I forwarded the document from my work pc to my home pc and still receiving the same error)
don't think it's anything related to the computers, thinking it's more an issue with the pdf. i've tried the basics like deleting temp files from IE, going to %temp% and deleting that out, doing an acrobat repair, trying in reader instead of acrobat, updating users from acrobat 10 to 11, and still receiving the same issue. the odd thing is, some people can open this document and some receive the error. the other thing is i've tried alternative pdf programs with no avail, same errors from those as well
i work on the helpdesk with one other person for the company and not sure what else we can try
don't think this is a pc issue - tried on pcs in the company, home pcs, personal pcs and all get this error
got to be an issue with either the pdf, or the way its being sent
i did reach out to OUR e-mail team here (lotus notes admin) and they've ruled out anything as far as an encryption causing the conflict may go, so notes isn't the issue either
would it be possible it's on the persons end that's sending the file?

Unfortunately, CR 10.5 is not supported on WIN 2012 Server. See this wiki for more details. In order to work in a supported environment you will have to upgrade to CR 2008 Service pack 7, or SAP Crystal Reports, developer version for Microsoft Visual Studio (2010 / 2012 / 2013).
- Ludek
Senior Support Engineer AGS Product Support, Global Support Center Canada
Follow us on Twitter

The file is damaged and could not be repaired.

Hi, I'm debugging an Adobe Drive CC connector and seeking advice on the following problem:
After I check-in an Illustrator file, the local copy becomes corrupt.
If I make a change and try to save it, I receive a message stating "The file is damaged and could not be repaired." If I close the file instead, I can't re-open it (same error message).
However, if I Empty Cache in the Adobe Drive Settings that fixes everything and I'm able to open/save the file without any error. (When I check it in, the same problem repeats itself until I empty cache again).
Where does this message come from and what conditions can trigger it? It's difficult to debug without Adobe's sourcecode to step through the event, but I wonder if it has to do with Etag data?
I've confirmed the stream data downloaded by the open & read handlers is not actually corrupt (by setting a breakpoint after the tempfile is written and checking it's md5).
The problem occurs after every checkin of Illustrator files, but never with Photoshop files.
Any advice? Thanks

I wish I had an answer, but I at least wanted to post in solidaridity and bump this thread. I've been experimenting with Adobe Drive CC (5.0.1.28) and am also suffering from the "file is damaged" issue.
I am using the CMIS connector and after almost every check in or out the file becomes corrupt -- but only in the Drive cache. If I clear the Adobe Drive cache the file is perfectly fine. I have watched the CMIS traffic in Wireshark and it appears to me that this error is entirely within Drive: it does not get a new copy of the file that's corrupted en route, it just corrupts its own copy in the cache.
I experience this with all file types.
Out of frustration I tried Alfresco 4.2.e, which is supposedly the software Adobe worked with to "polish" the CMIS connector, and the problem is entirely different. Every check in failes with "The operation could no be completed because of an unexpected error. Error Code: -1" and a RemoteIOException in the Drive log.
Drive then announces the file "has changed since I opened it, and it will be updated to the newest version" -- which DOES bring new bytes over the wire and avoids the corrupted local cache. Is that somehow the answer the Alfresco has discovered, to break the transaction and force Drive to refresh the file?
Please, anyone, chime in you've experienced either of these issues. I have yet to see a successful use case for Adobe Drive over CMIS, but surely someone is using this product?
Thanks.

There was an error opening this document. The file is damaged and could not be repaired. How do I fix this?

I found a resolution, but it is beyond my tdechnical skill without guidance as to where to enter this/how to do this: HKCU\Software\Adobe\(product name)\(version)\AVGeneral\bValidateBytesBeforeHeader=dword:00000000

Problem is not being able to open pdf attachments. Get this error message: "There was an error opening this document. The file is damaged and could not be repaired."
I searched on the web and in the context of a discussion I located, an Adobe professional posted this solution: HKCU\Software\Adobe\(product name)\(version)\AVGeneral\bValidateBytesBeforeHeader=dword:00000000.
I am accustomed to attempting to fix things myself, but I am not a computer science person so it's always a stretch for me. If I get a little guidance I can usually make necessary corrections. I hope that I can with this issue..
Still hoping that someone will know how to fix the error problem which according to what I read is a software issue having to do with the program not understanding something in the pdf header...

Overwrite files twice?

This problem just started happening today. For some reason, Illustrator CS3 now needs to be told twice to overwrite files.
Here's what happens:
Select File/Save as...
Dialog box comes up asking where to save the file.
Navigate and select a file to overwrite.
Get overwrite notification asking if I'm sure. (Yes) (No)
Select 'Yes'
Goes back to the dialog box mentioned in step 2 (overwrite didn't occur)
Repeat steps 3 to 5 again.
Finished.
This occurs when overwriting AI files as well as other files being exported. I tried restoring my AIprefs file but that didn't help. I've seen a few older threads here mentioning this problem without any replies. Is anyone aware of a fix for this problem?

Well, I figured out the problem and it turns out I didn't have to re-install at all (didn't discover that until after I did though)
It turns out that this is probably a bug. Not sure if it's documented or not.
If the PC has windows explorer set to "Hide extensions for know file types", (Explorer/Tools/Folder Options.../ View tab), then you will receive the overwrite notification twice.
As soon as I unchecked that option, problem solved.
Cheers

Writing to a cell in an existing Excel file without prompt of overwriting

I am trying to learn communicating with Excel spreadsheet via ActiveX. I started with the Labview example "Write Table to XL", however, this example creates new file which is not my case of overwriting an existing Excel spreadsheet. So, I made my changes to the VI to overwrite an existing file with my new value. Unfortunately, there is always prompt of overwriting the file, and even though I press "yes", the file keeps unchanged.
The help I need is to kindly :
1- check my attached VI for any mistakes
2- make the VI overwriting the file without any prompts
Thanks in advance
Solved!
Go to Solution.
Attachments:
Write_Value_to_Cell_ActiveX.vi ‏17 KB

I really appreciate your help, but I already changed the configuration to open a file path taking another ActiveX example as a reference. Here is my subVI's I used, but they are merged in LLB. I am sorry for my ignorance of how to extract all the subVI's from this file.
Attachments:
ExcelExamples.llb ‏62 KB

Air File is Damaged

Hi,
Went to start Adobe Acrobat and it won't start, pops up with I need to update Air first. But when you click to update, an error is reported that "the air file is damaged."
So I downloaded the latest Air from Adobe.com and ran install, no problems installing it. However, the error is still reported when starting Acrobat.
So I used Windows Control Panel to uninstall Air, and reinstalled it, all went OK again.
But Acrobat still won't start, the popup appears saying Air must be updated, followed by "the air file is damaged." I also tried uninstalling then installing Air from the C:/programs/adobe folder since some others on boards say that worked. Didn't work for me.
I've tried calling Adobe tech support, on the phone 1 hour waiting with no one answering, before I ran out of time and had to hang up. I tried calling a second time, and after anotherr hour of waiting, ran out of time again.
I suspect the problem is due to a recent auto update from Adobe? My system was running fine on Windows 7 since last year, and there have been no real changes on my PC. It's just recently that Acrobat won't work. Adobe Media Player is running fine, and I know it uses AIR, so I suspect Air is working ok.
I'm running CS4 Web Premium and Adobe Premiere Pro CS4 on Windows 7, no issues until this Air bug popped up. I do recall getting a recent Adobe auto-update though.
Any suggestions on what to try next?
Jonathan, developer
AtlantaWebDesignGA.com

After 5 months without an answer I no longer have any interest in it. Thanks anyway.

Overwriting file without damaging

Similar Messages

Maybe you are looking for