How many memory is used for the process of one connection?

Question

Hi,
how many memory is used for the process of one connection in unix
when the user connects to the database?
Thanks,

Answer 1

Write some queries using v$sesstat, v$statname, v$session to find the statistics for different stats. Query name from v$statname and find whatever you wants. I don't think there is a common rule that tells how much memory will be used for each connection, it depends on different factors like , resources available, type of databases, database memory settings etc.
Example query.
select s.osuser osuser,s.serial# serial,se.sid,n.name,
max(se.value) maxmem
from v$sesstat se,
v$statname n
,v$session s
where n.statistic# = se.statistic#
and n.name in ('session pga memory','session pga memory max',
'session uga memory','session uga memory max')
and s.sid=se.sid
group by n.name,se.sid,s.osuser,s.serial#
order by 2
;