tuning for frequently accessed tables
Only 5 tables are intensively involved in the daily operation. Very less activity is done on other tables.
The total size of these tables comes around 2GB. The SGA_TARGET is set to 8GB and pga is set to 5GB.
There will be less data change compared to select. It could be around 100 data changes (insert / update) where as more than 1000 select operations on these tables. Also, only 2 tables will have more data changes. Other 3 tables are mainly meant for select. But they too will have very little / rare data change.