V$SGAINFO

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

Column	Datatype	Description
`NAME`	`VARCHAR2(32)`	Name of the SGA size item
`BYTES`	`NUMBER`	Size of the item (in bytes)
`RESIZEABLE`	`VARCHAR2(3)`	Indicates whether the item is resizeable (`Yes`) or not (`No`)
`CON_ID`	`NUMBER`	The ID of the container to which the data pertains. Possible values include: `0`: This value is used for rows containing data that pertain to the entire CDB. This value is also used for rows in non-CDBs. `1`: This value is used for rows containing data that pertain to only the root n: Where n is the applicable container ID for the rows containing data