Subject | Re: gbak takes days to restore large db? |
---|---|
Author | dbambo2000 |
Post date | 2005-07-23T22:31:11Z |
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:
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:restore? If
> > 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
> > 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.