Calculate Hardware requirement.

Hi,
Can any one please show me the procedure to calculate CPU and Memory requirement for oracle application 12i or 11i. It will be used by arround 20 users and all the module will be used.
I have gone through the documentation, it says to calculate like the below
• Number of concurrent users and their usage profiles
• Number of concurrent manager processes and the types of jobs that they are running
• Load for activities other than Oracle Applications
• Size of the database
• Desired response time
Don't exactly know how to interpret this information.
Please let me know what is minimum requirement?

Have a look at the following links/notes:
Hardware requirements for Oracle APPS
Hardware requirements for Oracle APPS
Note: 216205.1 - Database Initialization Parameters for Oracle Applications 11i
https://metalink.oracle.com/metalink/plsql/ml2_documents.showDocument?p_database_id=NOT&p_id=216205.1

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Follow or contact me at...
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