RE: How much memory is an oracle shadow process using

Thanks for your script. The whole site is an excellent resource. Thanks Tim,

I have run your script and also run a query against statistic 15 and 20 from v$sessstat
(max UGA and PGA memory used )

SQL>
SQL> select name,statistic#,sum(value/1024/1024) "Curr Mb"   2 from v$sesstat a, v$database c
  3 where statistic# in (16,21)
  4 group by name,statistic#
  5 /

NAME STATISTIC# Curr Mb
--------- ---------- ----------

SID            16  2.8621788
SID           21 23.4703255

Running the oramem.sh script I return the following

Total RAM = 16384Mb, Swap = 19779.85Mb used, 2686.51Mb free

Total memory consumption by Oracle instance "SID":

# Procs         # Procs         Max             Sum
Foregrnd        Backgrnd        Shm Kb          Priv Kb         Total Kb
========        ========        ======          =======         ========
27              16              424600          106144          530744

So oracle shows 26Mb used where using a pmap command returns about 105Mb.

I think I am comparing like with like here but obviously the results don't show that

Does anybody have any other insight as to how what exactly the values in statistic# 16 & 21 can be used to indicate overall memory usage by Oracle processes

Thanks

John

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