Subject Re: [Firebird-Architect] Re: Some enhancements to NBackup to allow backups more often
Author Martijn Tonies
> > > What do you say?
> >
> > How is it going to know changes made by other processes (in the
> classic
> > mode)?
> >
> >
> > Dmitry
> >
> Sorry Dimitry, I don't understand very well. AFAIK, NBackup will log
> on _ON_THE_DATABASE_ as another user (thus, in the classic mode will
> create another process) will issue an ALTER DATABASE BEGIN BACKUP,
> do his job in HIS transaction, after this issue an ALTER DATABASE
> END BACKUP and exit closing the process. This is the way in which
> works today. Where is the problem if, instead exiting will wait some
> time and/or some ammount of changes and do the entire procedure
> again? I don't see what's the problem with the other processes?
> Aren't FB ACID compilant? Or I'm missing something?

From what I remember, NBackup doesn't "do" transactions, but creates
a database-page level backup.

> Another very important thing, regarding to the Sean's message, this
> will be a very important advantage IMHO rather than creating/closing
> server processes only to do an incremental backup (which is the case
> in classic mode) which will be a very important speed gain.

Martijn Tonies
Database Workbench - tool for InterBase, Firebird, MySQL, NexusDB, Oracle &
MS SQL Server
Upscene Productions
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