Oracle-L: RE: 100 instances on same server !!!

From: Loughmiller, Greg <Greg.Loughmiller_at_cingular.com>
Date: Fri, 08 Aug 2003 05:49:23 -0800
Message-ID: <F001.005C9A3D.20030808054923@fatcity.com>

we throw'm on there until we hit a predetermined capacity mark.. If it's a 100, cool.. Or if it's 20.. Just depends on the app, volume of txn's and memory requirements....

The caveats that are considered are some of the necessary kernal parms (semaphores, shared memory,etc).. Load it up, watch the capacity of the server.. And push the envelope:-)

Greg

-----Original Message-----
Sent: Friday, August 08, 2003 8:20 AM
To: Multiple recipients of list ORACLE-L

We have about 35 instances on each node of RAC they are of course DEVL/ACPT types.

Raj

Rajendra dot Jamadagni at nospamespn dot com All Views expressed in this email are strictly personal. QOTD: Any clod can have facts, having an opinion is an art !

-----Original Message-----
Sent: Thursday, August 07, 2003 6:54 PM
To: Multiple recipients of list ORACLE-L

Thanks for the replies so far. Considering the fact that my database is tiny ( just around 3 GB ), How many of them can work on same server? I can just test with 5 instances, with limited hardware. Will the CPUs be able to take load of 100 instances? Is it worth experimenting this?

I am on 8.1.7.4 and the application is already built. I stand no chance of changing the code. That is why using individual schemas for individual users is not an option. Right now I am just asked if 100 instances can run on same server and I don't have solid answer.

Just on side note, can I ask, What is the maximum number of instances anyone has ever worked/heard being installed with in same server?

Thanks again.

Dilip.

Original Message ----- To: Multiple recipients of list <mailto:ORACLE-L_at_fatcity.com> ORACLE-L Sent: Thursday, August 07, 2003 11:54 AM

100 instances wohhhhh . If you are in 9i look at possibilities like context or label security . or creating another schema .

-ak

Original Message ----- To: "Multiple recipients of list ORACLE-L" < ORACLE-L_at_fatcity.com
<mailto:ORACLE-L_at_fatcity.com> >
Sent: Wednesday, August 06, 2003 9:24 PM

> I have not heard installing hundred database instances on same server.
> Maybe you should think creating one instance, and then hundred schemas in
> it.
>
> Guang
>
> On Wed, 6 Aug 2003, Dilip Patel wrote:
>
> > Hi All,
> > Need some suggestions/Input.
> >
> > My application database is 8.1.7, NOARCHIVELOG, WIN200,
> > total size 4 GB, more of single user OLTP client-server application.
> >
> > Now the customer wants to give training on this application to hundred

trainees
> > at a time. For this he wants to install hundred database instances on same
> > server machine, which *each* will be accessed simultaneously from 100 different

> > client workstations.
> >
> > The reasons for installing all instances on same machine are
> > - to avoid re-installing databases on 100 workstations after each round

> > training.
> > - No user should see any other user's data.
> >
> > Please suggest if this approach is feasible or is it at all possible.

Tested this with upto 5 instances, and
> > it seems to work. The customer is willing to upgrade to any hardware needed for

> > this setup.
> >
> > Thanks in advance for your time.
> >
> > Dilip.
> >
>
> -- 
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> -- 
> Author: Guang Mei
>   INET: gmei_at_incyte.com <mailto:gmei_at_incyte.com> 
>
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-- 
Author: Loughmiller, Greg
  INET: Greg.Loughmiller_at_cingular.com

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Received on Fri Aug 08 2003 - 08:49:23 CDT