PGA
Monitor PGA Aggregate Target with V$PGASTAT in Oracle
Jun 18, 2026 / · 10 min read · Instance Tuning Oracle DBA PGA Memory Management Oracle Performance v$pgastat v$sql_workarea_histogram v$pga_target_advice v$sql_workarea ·Monitor PGA Aggregate Target with V$PGASTAT in Oracle Purpose Is PGA_AGGREGATE_TARGET set high enough for the work the instance actually does? V$PGASTAT answers that question. It is the instance-level statistics view for the Program Global Area (PGA), the private memory that server processes use for work areas. Oracle …
Read MoreMonitoring PGA Usage by Username in Oracle Database Purpose V$SESSTAT is the view that holds one statistic value per session, and two of its statistics describe how much Program Global Area (PGA) memory a session uses right now and the most it has used. The script below joins V$SESSTAT to V$STATNAME, filters the …
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