i have same problem on updated tungsten t5. databases disappear after reset. sometimes even application (i lost builtin wordtogo once)
some time ago i found somewhere that problem can be that because of crash while working with files internal volume may get corrupted. to meit helped a lot to use dbcachetooland set it completely paranoically to free dbcache alway when i want to start application and if freeblockis <8mb. now my t5 is extremely slow on switching applications (because this clearing takes a lot of time) but it is much more stable Paulo Raffaelli wrote: > I'll send this message again and give it a subject > this time :-) > > Hi all, > > Here's a problematic bug I'm working on, if anyone has > any ideas I'm all ears... > > Our app is rather large (2.6 Meg) and has even larger > databases associated with it (some users have 6 Meg, > some go all the way up to 13 Meg). The problem is that > users are seeing their databases disappear from the > device! > > This has been verified on Treos running 5.4.8 and > reported (but not verified) on a TX running 5.4.9. I > haven't been able to get it to happen on a T|3, which > is what leads me to suspect that the NVFS is somehow > implicated. > > At first, I thought that the amount of free memory on > the handheld was a clue; typically, the free memory > would slowly decrease as the database grew, and then > at some point the user would HotSync (which opens, > writes data into, and closes thedatabase), and at the > end of it the database would be gone. This has > happened on devices with over 3 meg of data free, > though. > > I suspect that if the data and the program combined > approach the size of the DbCache (which is 10 meg on > the Treo 650, as far as I know) that traversing the > database's records and reading them might fill the > cache and lead to a reset (and subsequent > corruption/deletion of the database). > > How can I determine whether the app's interaction with > NVFS is responsible for the crash? > Are there any known issues with NVFS that can lead to > a device reset? > What are the known limits of NVFS and the DbCache? > > Thanks in advance, > > Paulo Raffaelli > Senior Consulting Engineer > Bear River > > -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
