AWR Memory Advisors
I have the following memory advisors from the AWR; I would like to know how to interpret these results?
PGA Memory Advisory:
"PGA Target Est (MB)","Size Factr","W/A MB Processed","Estd Extra W/A MB Read/ Written to Disk ","Estd PGA Cache Hit %","Estd PGA Overalloc Count","Estd Time"
"138","0.99","90,700.12","11,521.57","84.00","214","788.090,200"
"326","0.15","90,700.12","18,015.29","86.00","94","937,669,120"
Hi,
These table function in a 'what-if' manner.
If you would increase the shared_pool size with a factor 2 then what would happen to the e.g. the number of physical reads.
Your output looks a bit strange to me however. It's either a very perfectly tuned system, or one that has no resources left.
In our 11g db the SGA_TARGET_ADVICE looks e.g. like below. It has more deviation between the several size factor values:
ESTD_DB_TIME ESTD_DB_TIME_FACTOR ESTD_PHYSICAL_READS SGA_SIZE SGA_SIZE_FACTOR
8988151 1 789178493 13312 1
11408661 1.2693 1282888558 4992 .375
10053248 1.1185 1006360414 6656 .5
9700014 1.0792 936518118 8320 .625
9304536 1.0352 855311651 9984 .75
9099608 1.0124 812301423 11648 .875
8937822 .9944 781286708 14976 1.125
8886590 .9887 769527949 16640 1.25
8834460 .9829 758163778 18304 1.375
8762557 .9749 745536922 19968 1.5
8583693 .955 702132127 21632 1.625
8568413 .9533 702132127 23296 1.75
8567514 .9532 676483826 24960 1.875
8567514 .9532 676483826 26624 2HTH
FJFranken
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Hi,
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