V$PARAMETER_VALID_VALUES

V$PARAMETER_VALID_VALUES displays a list of valid values for list parameters.

Column	Datatype	Description
NUM	NUMBER	Parameter number
NAME	VARCHAR2(64)	Parameter name
ORDINAL	NUMBER	Ordinal number in the list (1-based)
VALUE	VARCHAR2(255)	Parameter value at ordinal
ISDEFAULT	VARCHAR2(64)	Indicates whether the given ordinal value is the default value for the parameter
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