Subject Re: gbak takes days to restore large db?
Author dbambo2000
Aage,
Thanks for responding. I'm using Firebird 1.5. The page size is
8192. I'm not sure about the number of cache pages. I don't think
I've altered this from the default setting. Would that be an issue?

dbambo2000

--- In firebird-support@yahoogroups.com, Aage Johansen <aagjohan@o...>
wrote:
> dbambo2000 wrote:
> > Hello,
> > I am attempting to restore a 15GB database (containing 18 thousand
> > tables) from a remote Win2003 server to my local WinXP Pro Pentium 4
> > system with 768MB Ram. I began the restore about 20 hours ago and
> > thus far it has restored about 5.7 gigabytes. At this rate it will
> > take a few days to complete the restore. Is this normal? Can I do
> > anything to speed things up?
> > I understand that gbak creates indexes during the restore and that
> > this contributes to the time required to complete the process.
>
> 18.000 tables? (amazed!)
>
> If you use the -v switch on gbak you'll see what it is doing (restoring
> records or building indexes or whatever. Not much details, though).
>
> Which version og Fb (or IB)? Fb/1.5 is a lot quicker than previous
> versions (in my experience). It also depends on indexes and h/w. I'm
> restoring 1.5GB in about 3/4 of an hour (2x 3GHz XEONs and 15krpm
> disks). I think Fb/1.0 needed 4+ hours (on <1GHz cpus)
> What page size and no. of cache pages do you use?
>
>
> > Also, while running the restore, I mistakenly connected to the
> > database from IB Manager. I didn't open any tables or modify any
> > data. I only made the connection to the db and then immediately
> > closed the connection. Could doing so have corrupted the
restore? If
> > so, would it have said so via some error message immediately at the
> > command line prompt where the gbak command was initialized? Nothing
> > has changed at the command line prompt. The gbak command was not run
> > with the verbose option enabled.
>
> Is has been mentioned that this can be a cause of corruption. However,
> I've tried this (on pre-Fb/1.5) and did not notice any negatives.
> You'll have to test after the restore has finished...
>
>
> You should look forward to Nbackup :-/
>
>
> --
> Aage J.