One connection two session

Hi,
I use sql developer version 3.04 and when I connect to a oracle database (version 10.2) Ii open one connection and in the backend when I see two sessions are getting created is this possible ?
USERNAME SID SERIAL# STATUS MACHINE PROGRAM LOGON_TIME
LIVEQRY 882 9602 INACTIVE 3icpu298 SQL Developer 10-02-12 11:33:11
LIVEQRY 1076 29765 INACTIVE 3icpu298 SQL Developer 10-02-12 11:33:04
Regards,
Satish.J

Can you ping the SERVERNAME from the machine you are trying to add the RemoteApp host from?  You may have to enable the rule "File and Print Sharing (Echo Request - ICMPv4-In)" on the inbound firewall on the server you are pinging.  Does the name
resolve correctly?
I received that error when I had an issue with the network.

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