Based on the research I find that other than slight increase in the SGA size, increasing the number of PROCESSES shouldn't need any additional changes in the memory settings such as SGA (Shared pool needs to be increase slightly?) or PGA.
Can you please comment on the effects of increasing the PROCESSES from 800 to 1500 or 2000. SGA right now is 2GB (1GB BC,400M Shared pool + rest in all pools)
I need to know if we need to increase the PGA aggregate target to allow for the additional processes/connections that might come in.