btw, Oracle 10g can add new servers to your database's tier like plug and play (same OS).
This is what the guy at Oracle 10g seminar told me. He said what an administrator need is Internet browser.
Sinardy
-----Original Message-----
Sent: 26 December 2003 15:14
To: 'ORACLE-L_at_fatcity.com'
Not quite true, in 3 tiers architecture, DB should last tier and application in middle tier.
Well depend on your company budget and the size of everything and consideration of high scalability system, and future upgrade.
Your manager, see everything from cost or license point of view, I believe they purchase Oracle base on number of running sessions. I believe for long run 5 Oracle databases maintenance quite expensive (in term of tangible cost), I don't know what is your company budget, can't comment much.
5 small databases may be ok in one box (exclude applications), but 5 big (or medium) databases then I have to disagree with your manager.
Sinardy
-----Original Message-----
Sent: 26 December 2003 14:59
To: Multiple recipients of list ORACLE-L
Dear :All
Well we did not buy any application packages.
Currently we are using open source product ...which
is Apache and Tomcat.
By the way, have anyone ever have more than 5 database
under a single server ? I heard that the best practice
is to have 1 database n 1 application in a single
server. Is that true ?
Thank
JKean
- "Mercadante, Thomas F"
<thomas.mercadante_at_labor.state.ny.us> wrote:
> I would be very careful about doing this if you have
> purchased application
> packages. Sooner or later, you will want to upgrade
> one of the packages,
> and it will require a different release of Oracle -
> and you will be stuck.
>
>
> Tom Mercadante
> Oracle Certified Professional
>
> -----Original Message-----
> Sent: Wednesday, December 24, 2003 11:24 AM
> To: Multiple recipients of list ORACLE-L
>
>
> One other disadvantage of putting all instances
> together is if you need to
> say bounce the database (for parameter change or
> other maintenance etc)
> then all other applications will get affected.
> Whereas with separate
> instances other applications will not get affected.
>
> To some extent one application failing will not
> affect other applications.
> Except if one application does not close its
> connections then it could lead
> to maximum connections (sessions) being reached and
> affecting other
> applications.
>
> If the nature of the applications is different :
> OLTP, warehousing then you
> cannot really tune the parameters.
>
> On the positive side I think putting instances
> together will lead to some
> memory savings.
>
> I would suggest : Do not worry about who wants to
> put the instances together
> just list the advantages, disadvantages and make the
> decision.
>
> Stephen.Lee_at_DTAG.Com wrote:
>
>
> It is not necessarily true that an error in one
> application will affect all
> applications. If there is a problem with oracle
> instance or the database,
> then all applications might be affected.
>
> Multiple schemas which have the same table names can
> be a problem. If your
> applications uses public synonyms, then you might
> have a big problem.
>
> If everything is working fine now, it seems
> pointless to move things around.
> But this is philosophy. I do believe that isolating
> applications from each
> other as much as possible is usually a good thing.
> "Good fences make good neighbors." (usually)
>
> But, if your manager insists on it, you have no
> choice. Just do your best
> to keep the old stuff around in case it becomes
> apparent that the new way
> will not work and you must go back to the old way.
>
> > -----Original Message-----
> > Lately, m! y manager want me to remove all the
> databases
> > and remain a single instance. I was wondering if i
> > move everything into single database then if one
> of
> > the application fail due to oracle error , then
> all
> > other four application will fail also rite ?
> >
> > Each of our web application needs to have 2 schema
> and
> > both schema have to be transparent to each other.
> > While other application schema will be invisible
> to
> > each other. Since i have 5 web app then i will
> need 10
> > schema.One major problem is all the 10 schema will
> > contain same table name. It will be a mess putting
> so
> > much app in a single db .
> >
> > Pls correct me if i am wrong and do let me know
> what
> > are the pro and cons or maybe you can educate me
> with
> > some of the best practice to setup a proper
> production
> > server environment.
> >
> > Thank You
> >
> > Regards,
> > Jkean
> >
> > >
> --
> Please see the official ORACLE-L FAQ:
> http://www.orafaq.net
> --
> Author:
> INET: Stephen.Lee_at_DTAG.Com
>
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Received on Fri Dec 26 2003 - 01:19:25 CST
