Vlad, the large files have fb_sort prefix. But we also see a lot of small fb_lock files.
Lester, we are a Windows-based shop and most of our customers have FB databases are under 200MB. There are just a few that have 10-20GB databases. Our customers need the ability to put those files on a separate disk and restrict their cumulative size. TempDirectories setting would have been perfect for it, but I can't get it to work with embedded Firebird. If its is supposed to work in embedded mode then I will spend more time making sure that I am not doing something wrong before taking any more of your time. Thanks, Alec On Sun, Jun 3, 2012 at 3:15 AM, Lester Caine <les...@lsces.co.uk> wrote: > ** > > > Alec Swan wrote: > > We are working on tracking those queries down, but fixing them will > require > > an upgrade which the customer does not want to do. Moreover, their db > size > > is 12GB, so it may not be possible to optimize the queries a lot further. > > > > The customer also ran out of disk space trying to rebuild database > indexes > > which left firebird in a corrupted state. We had to add more space and > run > > gfix to repair it. This is a different problem, but it's also related to > FB > > disk usage. > > > > Is TempDirectories setting expected to work in embedded mode? What > happens > > when max allowed temp space is not big enough for a sort? > > Personally I would not be comfortable with the set-up you seem to be > trying to > run. 12Gb of database really needs it's own server rather than trying to > run it > with just a single embedded connection. I'd also be a lot happier having > that on > a Linux box which is just managing the database. Windows has it's own > 'layers' > of protection that keep files open while a program is running, so I > suspect that > it is windows that is retaining the disk space rather than Firebird. Until > a > program closes windows does not release some resources. > > But more important is to review the queries since a CTE approach may be > able to > apply filtering before you try sorting the extremely large results sets > you seem > to be working with. I have half million to one million record sets of data > these > days and have had to add extra indexes to allow some processing that was > fast > even on the slower machines from 10 years ago, but was getting slower. > > -- > Lester Caine - G8HFL > ----------------------------- > Contact - http://lsces.co.uk/wiki/?page=contact > L.S.Caine Electronic Services - http://lsces.co.uk > EnquirySolve - http://enquirysolve.com/ > Model Engineers Digital Workshop - http://medw.co.uk// > Firebird - http://www.firebirdsql.org/index.php > > > [Non-text portions of this message have been removed] ------------------------------------ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Visit http://www.firebirdsql.org and click the Resources item on the main (top) menu. Try Knowledgebase and FAQ links ! Also search the knowledgebases at http://www.ibphoenix.com ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/firebird-support/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/firebird-support/join (Yahoo! ID required) <*> To change settings via email: firebird-support-dig...@yahoogroups.com firebird-support-fullfeatu...@yahoogroups.com <*> To unsubscribe from this group, send an email to: firebird-support-unsubscr...@yahoogroups.com <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
