|Parameter Name||Development/Test Instance||11 – 100 Users||101 – 500 Users||501 – 1,000 Users||1,001 – 2,000 Users |
|shared_pool_size (no csp)||400M||600M||800M||1000M||2000M|
|shared_pool_reserved_size (no csp)||40M||60M||80M||100M||100M|
|Total Memory Required ||~ 2 GB||~ 3 GB||~ 6 GB||~ 13 GB|| ~ 25 GB|
***For instances that need to support more than a thousand concurrent Applications users, better to use the Oracle 64-bit Database in order to support a larger SGA.
***The parameter sga_target should be used for Oracle 10g or 11g based environments such as Release 12. This replaces the parameter db_cache_size, which was used in Oracle9i based environments. Also, it is not necessary to set the parameter undo_retention for 10g or 11g based systems, since undo retention is set automatically as part of automatic undo tuning.
***The total memory required refers to the amount of memory required for the database instance and associated memory including the SGA and the PGA. You should ensure that your system has sufficient available memory in order to support the values provided above. The values provided above should be adjusted based on available memory so as to prevent paging and swapping.