Not able to connect to datatbase from sqlplus

Hi,
I migrated database from windows xp to windows 2003,after migration im able to start the services and listener
when i tried to connect with sqlplus
Iam getting the following error
ERROR: ORA-12560: TNS:protocol adapter error
Kindly help me on this issue.
Regards,
Pradeep madhavan

user12287748 wrote:
ERROR: ORA-12560: TNS:protocol adapter errorThis is a generic error that points to some problem with the IP stack on that platform, or the process (e.g. sqlplus) inability to use the protocol stack.
You need to start with the very basics. Is there an IP stack? What does ipconfig return? Is the IP address valid? Is the netmask valid? Is the sqlplus executable allowed to access the IP stack (firewall/security software can prevent this)? Etc.
Once this has been checked, you need to check connectivity. Does ping show a response when sending ICMP echoes to the server? What does tracert say?
Then when you get to testing sqlplus (after the prior checks succeeded), you need to make sure that it firstly uses the correct/intended tnsnames.ora and sqlnet.ora files.. and that secondly, the configuration settings in these files are valid.

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