PGA memory statistics associated view (103)

There are fixed views and columns that provide PGA memory use statistics. Most of
these statistics are enabled when PGA_AGGREGATE_TARGET is set.
■ Statistics on allocation and use of work area memory can be viewed in the
following dynamic performance views:
V$SYSSTAT
V$SESSTAT
V$PGASTAT
V$SQL_WORKAREA
V$SQL_WORKAREA_ACTIVE
■ The following three columns in the V$PROCESS view report the PGA memory
allocated and used by an Oracle process:
PGA_USED_MEM
PGA_ALLOCATED_MEM
PGA_MAX_MEM

1. pga的統計資料可從
V$SYSSTAT
V$SESSTAT
等檢視中查詢
2. Oracle程式分配和使用pga記憶體可從V$PROCESS的PGA_USED_MEM , PGA_ALLOCATED_MEM ,
PGA_MAX_MEM三個欄位中查詢

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