Re: Migrating From AIX to Windows 2003

Don't do windows!

If you want the best bang for your buck, go Solaris on 2-8 core T1's (16 cores total) and 16GB of memory. As far as your license this is an equivalent system. It shouldn't matter whether or no (license-wise) you're using 32 vs 64 bit. Contact your Oracle representative about this.

"BD" <robert.drea_at_gmail.com> wrote in message news:1172250219.709751.123170_at_p10g2000cwp.googlegroups.com...
>I have a DSS system which has been heavily tuned over the past few
> years. The system is tuned as well as it likely will be tuned. But
> it's heavily loaded with jobs.
>
> We are tasked with Migrating from AIX to Windows 2003.
>
> I am reviewing the overall architectures, and while both systems will
> be running 32-bit versions of Oracle, and both have a 32-bit OS
> kernel, the underlying IBM hardware on the UNIX platform is 64-bit.
>
> The licensing arrangments at the time were for 32-bit Oracle, hence
> the 32-bit kernel.
>
> I'm reviewing the overall platform specs, and am aware of the memory
> addressing limitations surrounding 32-bit Windows - the /3GB switch, /
> PAE, etc.
>
> I am trying to assess from a very high level whether this architecture
> conversion will impose a significant performance risk. As to disk
> storage, both systems will access a SAN. I have little details on
> differences between the SAN configurations, if any.
>
> SOURCE SYSTEM:
> AIX 5.2 - platform: IBM,7028-6C4
> CPUs: 4x64bit @1002MHz
> RAM: 7168MB
> Kernel: 32Bit
> Oracle: 9i 32Bit
>
> TARGET SYSTEM
> Windows 2003 Enterprise 32bit
> CPUs: 4xdual-core 32-bit_at_2.6GHz
> RAM: 16GB
> Kernel: 32Bit
> Oracle: 10g 32Bit
>
> To me, the biggest concern is the hoops needed to be jumped through to
> access memory under Windows. I'm about to investigate pushing the
> buffer cache into the PAE range, to free up additional core memory for
> the PGA and Shared Pool. I'm hoping that will assist with some
> performance issues we're seeing.
>
> Any overall comments would be welcome.
>
> Oh - and the decision to leave AIX has already been made. No going
> back. ;-)
>
Received on Fri Feb 23 2007 - 12:23:40 CST