SGA PGA measuring

select * from v$sgastat order by 1;

select * from v$pgastat order by 1;

I noticed that you have some Pools in your SGA which are not used:

large pool free memory 209715200

But your PGA could reach about 340 Mo.

So, you may decrease about 160 Mo the large_pool_size parameter (you have 200 Mo free).

It will decrease the SGA (about 160 Mo).

Then you may increase the PGA_AGGREGATE_TARGET to 512 Mo.

The most important is that SGA + PGA remains below 2GB (except if you use /3GB parameter

which may help you to get 1 GB more).

------------------------Used SGA-----------------

select name, round(sum(mb),1) mb, round(sum(inuse),1) inuse

from (select case when name = 'buffer_cache'

then 'db_cache_size'

when name = 'log_buffer'

then 'log_buffer'

else pool

end name,

bytes/1024/1024 mb,

case when name <> 'free memory'

then bytes/1024/1024

end inuse

from v$sgastat

)group by name;

------------------------Free SGA-----------------

select name, round(sum(mb),1) mb, round(sum(inuse),1) free

from (select case when name = 'buffer_cache'

then 'db_cache_size'

when name = 'log_buffer'

then 'log_buffer'

else pool

end name,

bytes/1024/1024 mb,

case when name = 'free memory'

then bytes/1024/1024

end inuse

from v$sgastat

)group by name;

--------------------

select name,value from v$parameter where name ='sort_area_size';

---------------------------------- maximum PGA usage per process:--

select

max(pga_used_mem) max_pga_used_mem

, max(pga_alloc_mem) max_pga_alloc_mem

, max(pga_max_mem) max_pga_max_mem

from v$process

/

-----------sum of all current PGA usage per process---------

select

sum(pga_used_mem) sum_pga_used_mem

, sum(pga_alloc_mem) sum_pga_alloc_mem

, sum(pga_max_mem) sum_pga_max_mem

from v$process

/

-----------pga requirement as per high water mark

select

(select highwater from dba_high_water_mark_statistics where name = ('SESSIONS'))*(2048576+a.value+b.value)/1024/1024 pga_size_MB

from

v$parameter a,

v$parameter b

where

a.name = 'sort_area_size'

and

b.name = 'hash_area_size'

;