Database Initialization Parameter (EBSR12.1.1)

 Go to this path :- 

[oracle@sonu ~]$ cd  /oracle/PROD/db/tech_st/11.1.0/dbs

Edit initPROD.ora file as for server Physical Memory (RAM):-
[oracle@sonu dbs]$ vi initPROD.ora

 Database Initialization Parameter Sizing

This section provides sizing recommendations based on the active Oracle E-Business Suite user counts. The following table should be used to size the relevant parameters:-

https://docs.oracle.com/en/database/oracle/oracle-database/12.2/refrn/initialization-parameters-2.html