title: What are "(TNS V1-V3)" connections in database
body: <p>I see there are many connections are lying in our database (gv$session) module as "(TNS V1-V3)" and program also same as "(TNS V1-V3)". These are connections are inactive status and that too not balanced across both db nodes. We have database two node RAC setup (11.0.2.3) (oracle super cluster).</p>
  
  <p>Due to high connections in one of nodes, all application services are getting connected to specific db node. example node-2. during high load CPU usage going up. How can i reduce or remove these connections.
  Any suggestion would be great help.</p>