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