Schematool, db changes, data loss?

Question 1
What types of changes to the classes (and to the database using schematool)
could result in data in existing tables being lost?
Question 2
I know from db days that certain db changes result in the tables being
wiped. Will schematool warn of potential dataloss before it changes the
database tables?
Question 3
Is there anyway of handling changes that would cause a data loss manually?
Thanks.

What types of changes to the classes (and to the database using schematool)
could result in data in existing tables being lost?If you use the "add" action on the schema tool (rather than "refresh" or
"drop"), it will never drop any data. Otherwise, deleting or renaming a
class field and then running "refresh" or "drop" on the schema tool will cause
the old column for the field to be dropped (you could prevent this in the
case of renaming the field by adding metadata extensions to map the field to
the old column... or if you're already using extensions for mapping then it's
not a concern). There are other obvious cases too (running "drop" on a class).
Bottom line is to use the "add" action if you're worried about the tool
dropping anything.
I know from db days that certain db changes result in the tables being
wiped. Will schematool warn of potential dataloss before it changes the
database tables?The tool does not perform any changes that result in clearing tables. It
limits itself to creating tables, adding columns, removing columns.

Similar Messages

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.

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 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.

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!

Changing Date and Time

I have selected both photos and event separately in several attempts to change date and time in Photos/Adjust Date and Time without success. Each time I have attempted to do so another date and time has replaced the previous one but each has been incorrect. Some dates have been inserted dating back several centuries!! The time as well as the date has been incorrect.
I would appreciate suggestions and help in making the change correct.
Thanks.
Vernon

I also have this problem. One folder in particular is affected; within it after a few times to get it into the 2000's from 1900's, it is currently showing 1539.
I am at a loss since the batch change roller lets me select the correct year in iphoto.
I thought it might be a glitch in the older software so upgraded to the '11 iphoto. This made no difference at all.
This is still an issue unless the original poster got an answer or worked it out him/her self.
I also use Picasa on the same system but since it gets the photos from iphoto, it gets its errors there too.

Downgrade Admin to "Managed with parental controls" - no data loss?

I want to change my daughter's iMac account (originally my wife's computer) from "Admin" to "Managed with parental controls."
Is this possible while saving all of her school work/music/etc. which are now under the admin login/account? Or do I backup her home folder, delete the admin account, add a new one for me, then put her back in as "Standard" and go from there?
Hope there is an elegant/easy way to avoid data loss while still upgrading security on her usage...
Thanks in advance!
Kevin

hi k,
yes you can down grade her account and enable parental controls. This will not delete her content such as itunes, photos, documents, extra.
if you haven't done so already, make another administrator account with you will use to manage the computer. Make sure the account has a password; and that password is not the same as her password.
then Login with the new administrator account.
go to system preferences and click on accounts. unlock accounts by clicking on the lock. click on the old administrator account. now uncheck allow this user to administrate this computer. then check enable parental controls. then click on the open parental controls button.
you can now configure parental controls.

IS-U/CRM business partner created in SD results in data loss

Dear experts,
I have been investigating a strange issue with a customer.
It concerns a IS-U/CRM architecture, where also the SD customers are exchanged.
- All IS-U business partners are exchanged. Not all of these business partners have an SD customer (with same number) linked.
- Some SD customers (some account groups) have no IS-U business partner linked
Now when in IS-U a business partner is extended for SD (via reference customer) a bdoc is sent to crm, containing next changes :
- is_customer is set to X
- Sd account group is filled
On the R/3-ISU side the customer is created in SD. But when processing the BDoc sent to CRM, crm answers also with a customer create (??) which results in the SD customer to be overwritten
--> this is clear because we have blocked the queues and after extending the BP in ISU the SD customer was created with userid of the employee (ERNAM), and after processing BDoc the SD customer creator (ERNAM) was changed to the RFC customer.
This also leads to the fact that data which was copied in from the ref.customer into the SD customer was overwritetn again by the CRM insert.
Has anybody ever been confronted with a similar problem or can give me some advice how to handle this. As we are already in production, and this leads to data loss, In don't need to say this is a very urgent issue for us.
Thank you very much, and of course points will be rewarded!!
Regards,
Michiel Strybol

Hi Alin,
Thank you for your reply.
I'll try to explain these in some more detail :
1/ We have a system landscape which includes ECC/IS-U & CRM
2/ We have different scenarios active:
- We have a scenario where IS-U is not involved, meaning SD customers (=ECC customers in the Sales & Distribution Module (KNA1)) are replicated to CRM
- IS-U business partners are replicated to CRM. But not all IS-U business partners have an SD customer record active. When billing needs to be done for such a customer, an SD customer is created for this ISU business partner (from within ISU), using a reference customer in SD. Apparently this also seems to trigger a SD customer create sent from CRM which causes our problem ...
There is no master system. Business partners can be created both in ISU and CRM, and should the be replicated in the other system
Hopefully this clarifies it for you.
Thank you very much in advance!!
Michiel

Data loss in Manage data in HFM 11.1.2. Advice needed

Dear All,
Yesterday while using the Manage data function in HFM we encountered a large amount of data loss. Let me explain.
Our goal was to copy Non Financial accounts Entity Currency data from one budget scenario to another budget scenario. See the below screenshot. While this happened correctly an unintended consequence was that the financial accounts data got erased. So the budgeting team had to end up redoing their budgets again. My question is when we are telling the system to only copy the Non Financial data why would the system even touch the Financial data?? This does not seem right at all.
Later when I was doing testing I changed the above Replace to a Merge and then the system only changed the Non Financial data and kept the Financial data intact. If this is indeed how it works it is very confusing to say the least and does not make sense.
The point being that when we are specifying the account to be replaced or merged why does the system even touch the non-specified accounts? Is this a system bug or its just the way it works? Will appreciate an insight please.

Hi there,
Then I will agree with Eric... and I have also just noticed that you have used the Replace option in your screen which definitely has cleared all the accounts before loading the new data.
For me the best approach is to use the clear functionality to delete any previous data from the Non-Fin accounts and then use the Copy functionality with Merge to copy the data.
Regards,
Thanos

Safest Way to Penetration Test an Oracle DB with Potential Data Loss

Hi,
I was wondering what the safest way to protect Oracle from data loss when running a web application scan. We currently have an external company about to perform a web application scan and they warned us of potential data loss. However, we can't afford much downtime and our storage doesn't support things such as Copy on Write. What would you recommend? Do you think that something like putting the database in read-only mode for the duration of the test (2 hours) and enabling audit on all actions would be sufficient (we could then review the audit to see if any unauthorized calls were made)? Thanks.

If not running live you might consider restoring your database to before the test. But you need to have confidence this would work.
I assume your running live for the duration of the test.
Going read only might invalid the test, and your application might not be able to run read only without generating errors.
Examine and be aware of the flashback technologies available to you at your database version and which ones might be useful. In this context increase undo space/retention target might be helpful but dont dash off doing something at last minute.
Ensure you have checked out how to use logminer.
Consider not continously updating and standby database you have until test is complete.
Ensure your more recent backup is successful and you have checked your restore procedures and have contingency places in place.
In practice the web peneration test may attempt to change a small amount of data in a small number of records, but the agreement probably means they are not liabable if they dropped schema in the database!
If you have to correct data following their test then do so carefully. Doing the wrong thing (especially in a panic) can make a sitation worse, especially if you are doing something you are not familiar with. Often it may be better the data loss through the application itself.
If you do turn on auditing be aware of what it gives you before you turn in on, and beware any space implications.
I notice your are recently registered on the site ... this may mean you dont have much experience with oracle, you may be more of a system administrator for instance. No disrespect in that whatsoever. However especially if this is the case then remember in my opinion dashing to change something last minute statisically often does more harm than good overall and may be harder to undo.
Hope this helps.
bigdelboy
Edited by: bigdelboy on 28-Mar-2009 01:18
Edited by: bigdelboy on 28-Mar-2009 01:22

Map listener doesn't send the notification properly (data loss)

I have a cache cluster of 60 storage nodes, it contains around 7 GB of data.
I have attached a Map Listener to one of a cache in the cache cluster.
Sometimes the update event received by the listener has both the New value (mapEvent.getNewValue()) and old value (mapEvent.getOldValue()) is NULL.
I am expecting none of them to be Null.
This happen infrequently and rarely. But the data is very critical so I can't afford data loss.
Note : The data that was updated is present in the cache, its only the listener map event says its NULL.
Can anyone suggest what could go wrong ? Why I am getting NULL value ?

Hi,
a listener is lite, if you used one of the addMapListener methods having the boolean flag fLite as third parameter to register it, and you passed true to that parameter.
In all other cases it is a non-lite (heavy) listener which should always get the old and new values.
You should use a lite listener if you are just interested on which entries changed, but not on the changed values itself. If you need the old and new values, then you should use a heavy listener. If your cached values are large and you want to spare with the amount of traffic, then starting with 3.4 you can use a MapEventTransformer to transmit only the relevant data from the old and new values and not the entire values.
Btw, which version of Coherence do you use?
Best regards,
Robert

WRT400N data loss

Have new WRT400N router and 2 laptops running Windows/XP SP3. Copied a 2.3GB folder of photos from PC A to PC B. Lost 152 photos on 1st attempt (wired); 3 photos on 2nd attempt (wired); 8 photos on 3rd attempt (wireless). Normally did 10-16GB machine-to-machine copies without a problem on old, now dead router.
When I copy the same folder to an external HDD or a memory stick, I lose no data. When I move the memory stick to PC B and copy onto the internal HDD, there is no loss of data. Anyone else having data loss problems with the WRT400N? Or have any ideas?

Thanks, via_fan. Have to admit that it took awhile to figure out that you wanted me to change router settings. Guess that's why the Linksys forum calls me a "Newbie".
I did try your recommendations, but still have the same problem. I have also made sure that the drivers for my 4 network adapters are the latest versions (one was a year out of date). Followed by another test run; still a few missing photos. Then I ran CHKDSK on both machines and tested again. Still missing photos. One lap top is on the road for a few days, so I have time to develp my next step.

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

Schematool, db changes, data loss?

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