Re: Transaction management in Ozone

On Mon, 2004-07-05 at 17:30, Jean Morissette wrote:
> Per Nyfelt a écrit :
> > Hi Filip,
> > 
> > söndagen den 30 maj 2004 23.04 skrev Filip Kinsky:
> > 
> >>Hi,
> >>I'm just writing my dissertation work on Opensource ODBMS (and
> >>Ozone;)) and just now, I'm collecting some information about
> >>transaction management in ODBMSs - how is this solved in Ozone? is
> >>there classical pessimistic locking used? And is Ozone full
> >>ACID-compliant?
> > 
> > 
> > Yes it is ACID compliant except for some extreme cases such as server power 
> > failure which under certain unfortunate circumstances can corrupt the 
> > database.
> > [...]
> 
> Hi Per,
> I am interested about the extreme cases that you mentioned about 
> database corruption.  Could you explain to me when and why such a thing 
> can happen?  Leo talked previously about ReiserFS4; however I think that 
> we need to use JNI calls if we want to use transaction functionality 
> offered by Reiser4, no?

Applications do not have to be aware of the journalling possibilities of
a file system to benefit from them. There is fortunately no use
whatsoever to use JNI.

Cheers,
Leo




-------------------------------------------------------
This SF.Net email sponsored by Black Hat Briefings & Training.
Attend Black Hat Briefings & Training, Las Vegas July 24-29 - 
digital self defense, top technical experts, no vendor pitches, 
unmatched networking opportunities. Visit www.blackhat.com