Problem about port on RAC

RAC on windows server 2003 and oracle version 10.2.0.1 no patch.
My problem is RAC that have 2 nodes and when client connect to database with tnsnames.ora via Virtual IP on port 1526 but cannot until the network team use sniffer for capture event and found client connect to database with VIP and port 1526 and database response to client with public IP and port 1521.
The capture log found port 1526 that just use when client connect to database at first time and second time to all session life that connect with port 1521 and public IP alway.
The service on windows appear 2 service about listener there are listener port 1521 that is default listener and listener_<NODENAME> port 1526 if I stop default listener that clients and db server cannot conect to database.
Have any files configure about connection exclude listener.ora and tnsnames.ora?
And last question if I use USE_SHARED_SOCKETthat can fix the problem?
Edited by: taohiko on Oct 6, 2008 4:41 AM

Why did you configure 2 listeners? I guess (because no details about your net configuration files are known), second listener does not serve any instances, because its listener.ora has no static entries and does not register dynamically because of its non-default port. See the installation guide for a working network configuration:
http://download.oracle.com/docs/cd/B19306_01/install.102/b14207/undrstnd.htm#i1032938
Werner

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