FreeLists / oracle-l / Re: Server Architecture

[Tim Gorman <tim@xxxxxxxxx>]

Satheesh,

Yes, this is a very common architecture for segregating Oracle databases 
into their own "virtual servers" on UNIX.  You hit the nail on the head 
when you stated that "in broader sense, each UNIX account will be 
logically considered as one server".  There are many advantages and 
disadvantages to this.  Simplicity is not one of the advantages, but 
simplicity may not have been a high-priority requirement -- other things 
like security compliance and virtualization for easier provisioning may 
have been higher.
Recently Oracle introduced its own virtual machine, which accomplishes 
the same purpose 
(http://www.oracle.com/ondemand/collateral/virtualization-oracle-vm-wp.pdf).
The rationale for Oracle's virtualization strategy should be similar to 
what this consultant used for justification.  Perhaps you'd better study 
up on the pro's and con's of virtualization, then make your own decision 
as to whether your environment's requirements are met by this.
Tim Gorman
consultant - Evergreen Database Technologies, Inc.
P.O. Box 1802, Evergreen CO  80437-1802
website   = http://www.EvDBT.com/
email     = Tim@xxxxxxxxx
mobile    = +1-303-885-4526
fax       = +1-303-484-3608
Yahoo IM  = tim_evdbt



Satheesh Babu.S wrote:
> All,
>  We have been proposed with following architecture by our consultant. 
> I need your expert opinion on this.
>  
>  Assume a server got 5 database and all the databases running in same 
> oracle version and patchset.
> They are proposing to create 5 unix account. Each unix account will 
> have one oracle binaries and corresponding oracle DB. Apart from that 
> each unix account will have dedicated mountpoints. In broader sense 
> each unix account will be logically considered as one server.
>  I am slightly worried about this architecture. Because when this 
> architecture goes to production, the impact it will have on maintenace 
> going to be huge. Assuming i am having minimum 100 db in production( 
> ours is a very large shop) and if i need to apply one patch to all 
> these servers going to kill us. Secondly, will there be a impact on 
> licensing. I don't think so, but like to check it up with you guys. I 
> know it has got some advantage too. But is this approach is suitable 
> for large shop like us?
> Regards,
> Satheesh Babu.S
> Bangalore
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