Pga is growing on 11.2.2.0

  • From: "walid kaakati" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "walid_alkaakati@xxxxxxxxx" for DMARC)
  • To: "oracle-l@xxxxxxxxxxxxx" <oracle-l@xxxxxxxxxxxxx>
  • Date: Tue, 14 Apr 2015 13:12:38 +0000 (UTC)

Hi List,

We are running Oracle 11g 11.2.0.2 on windows Server 2008,i have set
memory_target to 24GB.
After a few days i see the SGA =9088 MB and PGA=15488 MB, the PGA Cache Hit %
is 76,31 , in the ADDM i see actual used memory for PGA is only 400 MB ! ,
beside this Memory Target Advisor shows that i need to increase PGA to 18586 MB
to get PGA cache hit ratio 90 %,
My question is this normal ??! how i limit the the size of PGA ? through the
time the buffer cache is decreasing for more PGA allocations ! 

Best wishes

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