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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Hardware Architecture.. please advise
On 03/08/2004 10:13:44 AM, "WEBBER, VALERIE" wrote:
> So there aren't any drawbacks to having the apps server and the database
> running on the same box? Is this in line with the new grid computing? I'll
> start out with Oracle9i for the database and 10g on the Apps server. I just
> want to make sure before I tell them to do it.
Well, if they're on the same physical box, that means that they're using the same I/O bandwidth, bumping into each other inadvertently. That is in complete accord with the principles of the gridlock computing. Even more, it's extremely hard to diagnose, because you don't see the activity caused by the "other server" on your monitors like sar or iostat. You will simply start waiting for the I/O. It will be even more beautiful, if the waits are because of the I/O channel capacity, which can happen for SCSI channels. So, you are not hitting the same disk, you are not on the same server, but the bottleneck is the SCSI adapter itself. Unless you can guarantee the I/O system performance, I'd advise against that. It would be like counting on speed of about 70 mph on LIE on Monday morning, just because it's a huge highway. Things might not work quite as you expect them to.
-- Archives are at http://www.freelists.org/archives/oracle-l/ FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html -----------------------------------------------------------------Received on Mon Mar 08 2004 - 09:42:32 CST
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