"Tim Young [Elevate Software]" <timyoung@elevatesoft.com> wrote in message
news:A9C6DDC1-1821-42CB-86EF-DE377097E2A5@news.elevatesoft.com...
>
> 2) Appears to be somehow related to what version of Delphi being used and
> how DBISAM is compiled.  Using DBSYS to do the backup/restore works fine
> every time.
>

D6 Pro. I have not recompiled DBISAM, just using the packages as downloaded
from your site.  Unfortunately, the problem does not seem to be recreatable
at will. Most backups restore just fine, once in a while they don't. Lovely,
eh? The kind of thing that makes one seriously consider farming.

Is it possible that it has something to do with tables being open with
updates still not written to disk at the time you start the backup? IOW,
that the disk file has changed between the time you start the backup and the
time backup gets to that file? Stab in the dark...

Robert

HI TIm,

Im pretty sure the tables would not be corrupted before and after the backup, as my "Save" process

1. Closes all tables
2. Runs Backup
3. Reopens all Tables

The 1 and only time I witnessed this was I saved the data using backup and then continued using the app just fine, Went to reopen the saved file and the restore stopped mid
way with the error.

Since reverting to B2, I havent seen any of these problems, and hopefully thats not coincedence.

Robert,

<< Is it possible that it has something to do with tables being open with
updates still not written to disk at the time you start the backup? IOW,
that the disk file has changed between the time you start the backup and the
time backup gets to that file? Stab in the dark... >>

From what I have seen in Clive's backup that he sent me, the issue is that
the decompression is resulting in a different number of bytes (and possibly
the bytes themselves) than the backup.  This, combined with the fact that
the DBSYS backup/restore always works fine (D5) is leading me to believe
that there is a compiler issue with the compression/decompression when
mixing compiler versions and/or settings.

--
Tim Young
Elevate Software
www.elevatesoft.com

Clive,

<< Since reverting to B2, I havent seen any of these problems, and hopefully
thats not coincedence.  >>

Well, my guess would be that it is a coincidence.  There haven't been any
changes to the backup/restore in a while.

--
Tim Young
Elevate Software
www.elevatesoft.com