Configured TNS in oracle client to RAC database

Hi Experts,
I have a 4 nodes oracle RAC in radhat 5.0
both oracle database and client as 10.2.0.4.
I created a TNS that works in our office but it does not work in our remote brance office.
Based on experts instruction, I set up sqlnet trace at client side. but not any file that be gererated.
In linux RAC database, I saw listener.log file as
28-AUG-2009 11:00:01 * (CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=sale)(INSTANCE_NAME=sale1)(CID=(PR OGRAM=D:\oracle\product\10.2.0\client_1\BIN\sqlplusw.exe)(HOST=TRAC3)(USER=JIM))) * (ADDRESS=(PROTOCOL=tcp)( HOST=xxx.18.10.xx)(PORT=3289)) * establish * sale * 0
in client pc sqlnet.ora my setting as
SQLNET.AUTHENTICATION_SERVICES= (NTS)
TRACE_LEVEL_CLIENT = 16
TRACE_FILE_CLIENT = client
TRACE_DIRECTORY_CLIENT = C:\TEMPODBC
TRACE_TIMESTAMP_CLIENT = ON
SQLNET.EXPIRE_TIME =10
SQLNET.INBOUND_CONNECT_TIMEOUT = 500
SQLNET.SEND_TIMEOUT = 500
SQLNET.RECV_TIMEOUT = 500
I got a error as
ERROR:
ORA-03135: connection lost contact
which wrong is in my case?
I can connect to all other window database from thsi PC.But I can not connect to RAC database from this PC.
However, I can ping RAC node's IP and VIP from this PC
I also can connect to RAC database with TNS from other window PC.
What do I need to do?
ThanKs for any help.
JIM

Hi Sb92075,
Thanks for your help.
I got same error after comment #SQLNET.AUTHENTICATION_SERVICES= (NTS) in client sqlnet.ora in client.
the server side does not have sqlnet file in linux platform.
I also check listener services that all instance status is ready.
I just saw sqlnet.log file in server side that error as
Fatal NI connect error 12170.
VERSION INFORMATION:
TNS for Linux: Version 10.2.0.4.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 10.2.0.4.0 - Production
Time: 28-AUG-2009 13:21:06
Tracing not turned on.
Tns error struct:
ns main err code: 12535
TNS-12535: TNS:operation timed out
ns secondary err code: 12606
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
Client address: (ADDRESS=(PROTOCOL=tcp)(HOST=xxx.18.xx.xx)(PORT=3513))
what do i need to do?
Thanks
JiM
Edited by: user589812 on Aug 28, 2009 10:22 AM

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