| Property | Description | 
|---|---|
| Parameter type | Big integer | 
| Syntax | SGA_MAX_SIZE =integer[K | M | G] | 
| Default value | Initial size of SGA at startup, dependent on the sizes of different pools in the SGA, such as buffer cache, shared pool, large pool, and so on. | 
| Modifiable | No | 
| Range of values | 0 to operating system-dependent | 
SGA_MAX_SIZE specifies the maximum size of the SGA for the lifetime of the instance.