you don't share your sql. However the key may well be in the word "attempts" PGA_AGGREGATE_TARGET isn't a hard limit, though 30% above is somewhat surprising for a target of 1g. Niall On Mon, Aug 10, 2009 at 6:56 PM, Jiang, Lu <Lu.Jiang@xxxxxxxxxxxx> wrote: > Hi all, > > > > The following is my query result against v$pgastat view. > PGA_AGGREGATE_TARGET is set to 1G. According to Oracle' documentation, Oracle > should attempts to keep the amount of private memory below the > PGA_AGGREGATE_TARGET specified. But from the following it looks Oracle > allocated 1.2G PGA memory, and the maximum PGA allocated is 1.3GB which is > far above 1G (PGA_AGGREGATE_TARGET), I am confused. Could anyone share > some light on this? > > > > aggregate PGA target parameter > > 1,073,741,824.00 > > bytes > > aggregate PGA auto target > > 85,053,440.00 > > bytes > > global memory bound > > 107,366,400.00 > > bytes > > total PGA inuse > > 984,952,832.00 > > bytes > > total PGA allocated > > 1,259,997,184.00 > > bytes > > maximum PGA allocated > > 1,347,652,608.00 > > bytes > > > > Thanks, > > Lu > -- Niall Litchfield Oracle DBA http://www.orawin.info