V$MAP_SUBELEMENT

V$MAP_SUBELEMENT displays a list of all subelement mapping structures in the shared memory of the instance.

Column	Datatype	Description
`CHILD_IDX`	`NUMBER`	Index in `V$MAP_ELEMENT` corresponding to the child element
`PARENT_IDX`	`NUMBER`	Index in `V$MAP_ELEMENT` corresponding to the parent element
`SUB_NUM`	`NUMBER`	Subelement number
`SUB_SIZE`	`NUMBER`	Subelement size in HKB
`ELEM_OFFSET`	`NUMBER`	Offset in HKB on the child element
`SUB_FLAGS`	`NUMBER`	Subelement flags (currently unused)
`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