V$SYSTEM_WAIT_CLASS

V$SYSTEM_WAIT_CLASS displays the instance-wide time totals for each registered wait class.

Column	Datatype	Description
WAIT_CLASS_ID	NUMBER	Identifier of the wait class
WAIT_CLASS#	NUMBER	Number of the wait class
WAIT_CLASS	VARCHAR2(64)	Name of the wait class
TOTAL_WAITS	NUMBER	Total number of waits from this wait class
TIME_WAITED	NUMBER	Total amount of time spent in waits from this wait class (in hundredths of a second)
TIME_WAITED_MICRO	NUMBER	Total amount of time spent in waits from this wait class (in microseconds)
CPU	NUMBER	Total amount of CPU time consumed while implementing waits from this wait class (in microseconds)
TOTAL_WAITS_FG	NUMBER	Total number of waits for this wait class, from foreground sessions
TIME_WAITED_FG	NUMBER	Total amount of time spent in waits from this wait class, from foreground sessions (in hundredths of a second)
TIME_WAITED_MICRO_FG	NUMBER	Total amount of time spent in waits from this wait class, from foreground sessions (in microseconds)
CPU_FG	NUMBER	Total amount of CPU time consumed while implementing waits from this wait class, from foreground sessions (in microseconds)
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

Note: This view returns instance-wide data and a value of 0 in the CON_ID column when queried from the root of a CDB.