On Fri, Sep 12, 2008 at 2:12 AM, Vivek_Sharan <Vivek_Sharan@xxxxxxxxxxx> wrote: > Hi Admin, > > I'm new to this I have few queries as listed below > > 1) Number of connections made with a particular database. Wait, how to find out how many connections there are, or how many can a particular db handle. For this kind of thing, look at the admin functions in the pgsql-sql docs: http://www.postgresql.org/docs/8.3/interactive/functions-admin.html specifically you want something like: select datname from pg_stat_activity; select datname, count(datname) from pg_stat_activity group by datname; > 2) And how can I check which process (PID) is responsible for the > connection and That table up there ^^^ > 3) what all can make a postgres process as heavy as 70-80 MB in size you may not be measuring properly. When you say it's using 70-80 MB how do you know this? The numbers you see in top aren't necessarily what some folks think they ar.