Connections not evenly distributed across nodes

Hi Gurus,
I have a 2 node RAC 11gr2 setup RHEL 6.2. Session counts on both nodes are of a huge difference. Not sure whether load balancing is happening or not. Please let me know how to enable the same.
Configuration
1) We are not using SCAN feature.
2) Clients are using TNS names connecting through service name i.e. REMCORP
SQL> show parameter remote_listener
NAME TYPE VALUE
remote_listener string LISTENER_REMCORP
3) SQL> SELECT inst_id, count(*) "DB Sessions" FROM gv$session
WHERE type = 'USER' GROUP BY inst_id; 2
INST_ID DB Sessions
1 5
2 106
Regards,
Nikhil Mehta.

Hi Nikhil,
see here:
http://www.oracle.com/technetwork/products/clustering/overview/awm11gr2-130711.pdf
this should answer most questions.
However in your special case it may well be that you opened the connections all at once.
For serverside loadbalancing PMON will inform the remote listeners about the actual status every 60 seconds.
So if all sessions are connecting at the same time, what you see might be expected.
If you use connection pools, and the features showed in the above whitepaper, this should equal over time.
To circumvent this from happening, it may help to use LOAD_BALANCE in the client tnsnames.ora as well.
Regards
Sebastian

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