V$PGASTAT

V$PGASTAT provides PGA memory usage statistics as well as statistics about the automatic PGA memory manager when it is enabled (that is, when PGA_AGGREGATE_TARGET is set). Cumulative values in V$PGASTAT are accumulated since instance startup.

Column	Datatype	Description
NAME	VARCHAR2(64)	Name of the statistic
VALUE	NUMBER	Statistic value
UNITS	VARCHAR2(12)	Unit for the value (microseconds, bytes, or percent)