Re: Oracle the best

Check v$session to see how many connections you're actually making at the database.

If it's 500, you don't have nearly enough RAM.

A conservate estimate of server side RAM per conection is 8 meg. At least that's conservative on every 8i instance I've checked.

500 connections would require 4 Gig of RAM.

Add your SGA and system and other overhead and you need at least 5 gig of RAM.

If you check you're performace on the server you'll likely see a lot of swapping going on.

Jared

On Friday 09 November 2001 22:20, Prasad BAV wrote:
> Hi Rao,
>
> No, it is not running in MTS mode. It is running in
> shared server mode.
>
> Prasad BAV.
> --- "Rao, Maheswara" <Maheswara.Rao_at_Sungardp3.com>
>
> wrote:
> > Prasad,
> >
> > Is the database running on MTS mode?
> >
> > Rao
> >
> > -----Original Message-----
> > Sent: Friday, November 09, 2001 9:00 AM
> > To: Multiple recipients of list ORACLE-L
> >
> >
> > Hi,
> >
> > All of us believe Oracle is the best database
> > server.
> > We can keep our application data on Oracle and just
> > forget the rest. I strongly believe I can do
> > anything
> > I want, with Oracle.
> >
> > We have a problem with Oracle. Ours is a small
> > application with most hits. Lot of people will be
> > using our solution and each hit results in database
> > access.
> >
> > We have limitation on the maximum number of
> > connections that can be made from Java
> > application(servlet). We are accessing from 16
> > servlet
> > machines to the database and making around 500
> > connections. We are using a connection pool from
> > Javaexchange(DbConnectionBroker). When the
> > application
> > reaches beyond 500(I think the number is still less)
> > connections, the database stops responding. Database
> > machine's CPU usage goes 100%. And any requests from
> > servlets at this point, will wait for a long time to
> > get response from oracle.
> >
> > We are using Oracle 8.1.7, on Windows 2000. System
> > RAM
> > is 3GB. We are using 1.5GB of SGA. System is 1GHz
> > processor.
> >
> > We are using CLOB very frequently.
> >
> > Thanks in advance for your suggestion on tuning.
> >
> > Regards,
> >
> > Prasad BAV.
> >
> > __________________________________________________
> > Do You Yahoo!?
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> > http://careers.yahoo.com
> > --
> > Please see the official ORACLE-L FAQ:
> > http://www.orafaq.com
> > --
> > Author: Prasad BAV
> > INET: bavprasad_oracle_at_yahoo.com
> >
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> > --
> > Author: Rao, Maheswara
> > INET: Maheswara.Rao_at_Sungardp3.com
> >
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> Find a job, post your resume.
> http://careers.yahoo.com

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Jared Still
  INET: jkstill_at_cybcon.com

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