Answer Posted / swarna

SGA is a system global area (or) shared global area. The information available within this area is accessed by all users. Memory is allocated to the SGA when oracle instance starts.

Components of SGA:
1.Shared pool
(a) Library cache
(b) data dictionary cache
2.Data buffer cache
3.Redolog buffer cache
4.Large pool
5.Java pool

Size of the SGA can be view by SGA_MAX_size
The memory allocated to SGA can be viewed by Show SGA (or) show parameter sga_target.

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