Re: Oracle 8.1.7 (32 and 64 Bit) ?

DJ wrote:
>
> <rc_at_die@you@!spammers.sandworm.demon.co.uk> wrote in message
> news:uounpvgm0gdjbpl6nvkd74t8o2fcm31uj5_at_4ax.com...
> > I was looking the Oracle site.
> > They seem to have two version of Oracle 8.1.7 (64 and 32 bit) for Sun
> > Solaris.
> >
> > Can any one tell me what the difference is between them, I am aware
> > that
> > Solaris and Sparc chips are 64bit system.
> >
> > Am I right in understanding the only difference between them is how
> > memory is addressed etc and makes no difference to how the Application
> > that uses it is compiled ?
> >
> > Perhaps some one can enlighten me
> >
> > Thanks
> >
> >
>
> the main difference is 32 Bits :-D

Which can, and does, have significant performance implications (especially when file position offset or memory access pointers are calculated). As well as implications to how big a file or memory area can be (without fancy calculations).

This is very reminicient of the old 86' chip family conundrum where 32-bits 'can be' made up of 2x16 bits (or 4x8 bits), but at what cost? Anyone remember the old PC 640K memory barrier and the reasons?

Just don't plan on putting a 64 bit implementation of anything on a 32 bit machine or operating system. Even if appropriate lasrge-word emulation is available, likely there will be incompatible library calls.

-- 
/Hans
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