Very Urgent : Db processes are increasing

Hi List,

I am using pgsql 7.4.2 on solaris-9. When I start the postgres with "-i"
option as below, the processes of the postgres are increasing
drastically.

pg_ctl start -D /db1/postgresql/data -o "-i"

If I exclude "-I" option, my application couldn't connect the DB server
at all.
Here are my queries.
1) Why DB processes are increasing drastically, it reaches up to 104
connection( configured to 100 max connections) through there is no
application trying to connect/access the DB.

2) Is "-I" option is important to get the access from other server to DB
server ??

Pls reply your quick response.

--Suresh

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