Marcin,

<< I think you misunderstood me. Right now I create backups the way you
showed in your script. I works fine for me. Maybe I should use "Hot backup"
instead. I want a backup that would not lock database and create backup
while users are using it. >>

Ahh, now I understand.   Yes, you can do hot backups with EDB,
especially with 2.0 and the SAVE UPDATES/LOAD UPDATES functionality.
However, the SAVE UPDATES still has to do some locking during its operation,
but the time frame is much, much less because the only thing that is being
saved is the difference in updates between the last time the SAVE UPDATES
was executed and now.   A SAVE UPDATES is kind of like an incremental
backup.

--
Tim Young
Elevate Software
www.elevatesoft.com