V$SGAINFO

V$SGAINFO displays size information about the SGA, including the sizes of different SGA components, the granule size, and free memory.

Column	Datatype	Description
`NAME`	`VARCHAR2(32)`	Name of the SGA statistic
`BYTES`	`NUMBER`	Size of the statistic (in bytes)
`RESIZEABLE`	`VARCHAR2(3)`	Indicates whether the statistic is resizeable (`YES`) or not (`NO`)