Cant connect to sqlplus

hi everyone,
I have succeffully configured Oracle RAC on Linux on VMWare server and its working fine, I have configured TAF and loadbalancing also. but when I try to connect sqlplus I get the following error
sequence of my commands is as follows as oracle user:
./sqlplus /nolog
SQL>connect / as sysdba
Error:
ORA-12162: TNS:net service name is incorrectyly specified.
plz tell me what's the mistake and how to rectify it.

Hi
You'd really need to supply more info for me to be sure of this but the first thing I'd check are the values for the following environment variables.
echo $ORACLE_SID
echo $ORACLE_HOME
If these aren't set correctly then set them (and possibly add them to your .profile) then try the command again.
Cheers
Steve

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LSNRCTL for 32-bit Windows: Version 10.2.0.1.0 - Production on 06-ÌUB-2008 22:45
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Copyright (c) 1991, 2005, Oracle. All rights reserved.
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