Re: 2 gb file limit

In article <3637D6BF.F7F701A3@hotmail.com>, June Tong <june_t@hotmail.com> writes >IDS *CANNOT* handle chunks over 2GB in size, on a 2K pagesize machine, (4GB >on a 4K pagesize platform) and to tell people that it will is irresponsible. >Your customer is asking for trouble, and is going to end up with corruption >that is completely irretrievable. Everything will be "almost fine" until >they write to the next chunk (e.g. writing to chunk 4 if your 15GB chunk is >chunk 3), and the new chunk REPLACES THE PAGES past 2GB in your big chunk, or >your big chunk overwrites the pages in the next chunk. And then, your only >option will be to restore from an archive taken BEFORE this overwriting took >place, and THEN export all your data to ASCII format and re-create your >entire instance with 2GB chunks. > >(sigh, something else for the FAQ) > I'll add it... >If IDS is letting you create chunks over 2GB (or 4GB on a 4K pagesize >platform), then this is a MAJOR bug that someone out there ought to report >and get fixed ASAP. > >June >-- >june_t@hotmail.com >Grounded in Palo Alto, living on M&M's (plain) > > >Howard Soper wrote: > >> IDS *CAN* handle considerably higher than 2Gb limits under 64bit >> architectuire. >> >> I had a client with a single 15Gb chunk and everything was ALMOST fine. >> >> The oncheck functions started to fail first after 10-12 Gb - then engine >> never actually failed but anyones guess as to when it would go. >> >> The concensus is that although possible this behaviour is UNSUPPORTED and >> HIGHLY UNRECOMENDED. >> >> Hope this helps. >> Howard Soper > > > -- David Williams Maintainer of the Informix FAQ Primary site (Beta Version) http://www.smooth1.demon.co.uk Official site http://www.iiug.org/techinfo/faq/faq_top.html I see you standin', Standin' on your own, It's such a lonely place for you, For you to be If you need a shoulder, Or if you need a friend, I'll be here standing, Until the bitter end... So don't chastise me Or think I, I mean you harm... All I ever wanted Was for you To know that I care