application tier RAM requirements

Hi all,

is there document for application tier(apache+forms+reports%concurrent managers 
etc) RAM requirements according to user count. Because there is for database 
RAM requirements, you can see it below!

note id :216205.1


          Parameter Name
         Development / Test Instance
         11 – 100 Users
         101   – 500 Users
         501 – 1,000 Users
         1,001 – 2,000 Users [1] 
             Processes
         200
         200
         800
         1200
         2500
             Sessions
         400
         400
         1600
         2400
         5000
             db_block_buffers
         20000
         50000
         150000
         250000
         400000
             db_cache_size [2] 
         156M
         400M
         1G
         2G
         3G
             sga_target [3]
         1G
         1G
         2G
         3G
         14G
             undo_retention [4] 
         1800
         3600
         7200
         10800
         14400
             Shared_pool_size (csp)
         N/A
         N/A
         N/A
         1800M
         3000M
             Shared_pool_reserved_size (csp)
         N/A
         N/A
         N/A
         180M
         300M
             Shared_pool_size   (no csp)
         400M
         600M
         800M
         1000M
         2000M
             Shared_pool_reserved_size   (no csp)
         40M
         60M
         80M
         100M
         100M
             pga_aggregate_target   [5]
         1G
         2G
         4G
         10G
         20G
             Total Memory Required [6]         ~ 2 GB
         ~ 3 GB
         ~ 6 GB
         ~ 13 GB
      
~ 25 GB
      
  

       
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