Hardware Requirement for Oracle Database

Question

Hi, i need help, i wanna build new server with some requirement of total user who is connect, size of database n etc. Can u tell me how to calculate ram size, processor need and etc to build good server for my company need?
I remember Oracle before have some excel where we can fill the total user n other information n from that information the excel will tell u how many processor do u need, what ram size do u need n other else. Can someone help me find this excel??

Answer 1

user11257918 wrote:
There is 3360 user who wil connect concurrently to the database and there is 20 million customers in my master customer.
Is really don't have some formula or other things that help me to decide the number of processor and size of the ram?There are formulas. They are generally useless. Any formulas are only as good as the assumptions and, unless you know the assumptions you will not know whether the formulas are in any way valid.
Questions you need to answer are all around workload.
3360 concurrent users who only ask about sysdate will not load the system much. 3360 users who only ask 'what is the customer phone number' using only a properly indexed customer name field will likely not have a huge impact, although you may need to play with the index and the buffer cache for a bit. 3360 users who do concurrent 50 table joins with 20M row sort-merges will have a different impact on the system requirements. And 3360 users who perform updates and inserts using randomly assembled dynamic SQL with no bind variables at all will have a completely different impact again.
(Then again, user 3360 is known to ask some tough questions. But provide good answers as well. ;-) Have to say, I haven't seen much from 3360 lately. Different handle?)
The usual way to get a reasonable idea of the size is to prototype or benchmark. The best benchmark is a copy or simulation of your proposed environment. Skip this, and you will forever be 'right sizing' the app, no matter how much you calculate.
One way I've seen it successfully done is to do a small benchmark,use the SpecMARK tables (http://www.spec.org) to scale.