32bit vs 64 bit Linux for Oracle (was: Hardware recommendations for RedHat X86-64/10gR2)

  • From: "Ray Feighery" <rjfeighery@xxxxxxxxx>
  • To: oracle-l <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 13 Jun 2007 11:03:01 +1000

Following on from this discussion, what is the take up on Linux 64 bit
vs 32 bit for Oracle? The main reason for going with 64 bit seems to
be for a large SGA, particularly the non buffer cache sections.
Although large is relative; a 2Gb SGA is not considered large any
more.

The reasons for staying with 32 bit seems to be perceived driver
immaturity with the 64 bit versions leading to some reports of slower
disk i/o.

I believe the latest versions of the proprietary *nixes (e.g. Solaris,
HP) are now 64 bit.

Basically, if you are building a Linux server to run Oracle would you
go with 64 or 32 bit and why?

Ray
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