Thanks Mark. I agree - there is no way to get realistic workload simulation. I can see this is growing into nice ease-into-the-weekend topic. What all experts here are saying is that there is no way to calculate/estimate future storage requirement for new systems, before they actually start to be used. I am using fully loaded system ( data migrated from legacy ) as baseline. I can also get more or less accurate expected numbers of transactions from business. I can not get realistic workload though. I have application code and access to development team - so we know what tables will be growing the most ( baseline can also serve as guide ). It certainly is not scientific way but I guess it is better than nothing. rm. On 8/26/05, Gogala, Mladen <MGogala@xxxxxxxxxxxxxxxxxxxx> wrote: > > > That was covered by using the entrails of Oracle sales people for growth > prediction. > > It also applies to disk pushers a.k.a. "storage vendors" > > > > > -- > > Mladen Gogala > > Ext. 121 > ________________________________ > > > From: Jared Still [mailto:jkstill@xxxxxxxxx] > Sent: Friday, August 26, 2005 12:02 PM > To: MGogala@xxxxxxxxxxxxxxxxxxxx > Cc: Ranko Mosic; Christian.Antognini@xxxxxxxxxxxx; > tomday2@xxxxxxxxx; Oracle-L > Subject: Re: Table growth - disk sizing > > > > > I disagree. > > Your storage vendor can certainly be relied on to give you > an accurate prediction of your storage requirements for the > next 5 years or so. > > Jared > > > -- > Jared Still > Certifiable Oracle DBA and Part Time Perl Evangelist -- //www.freelists.org/webpage/oracle-l