Cannot connect through TCP/IP

On a single NT workstation I have (a) Developer 6 (b) Oracle 8i Enterprise (c) Application server - all on different homes.
I can connect to the database from Dev 6 if protocol is IPC but not if it is TCP. I can Ping the host successfully and Listener is opening to port 1521 if I use TCP.
If I Tnsping the database the address is successfully resolved but I simply timeout. No error message.
Can anyone help?

Yes, you have to configure a connect string (connect_string) your
tnsnames.ora and use it while connecting to the database from the client. Add
appropriate values for connect_string, ip_or_hostname and sid :- 
 
Here are the options to configure:- 
 
Option # 1: Oracle Net Configuration Assistant 
 
You can use the above (Start -> Programs -> Oracle...) if Oracle Net component
is installed in your client machine. 
 
Oracle New Configuration Assistant -> Local Net Service Name configuration ->
Add -> 
Service Name : sid.domain or just sid 
Protocol: TCP 
Host name: ip_or_db_hostname 
Choose the standard port 1521 (default) 
Perform a test to check the config (by default it will try to use
system/manager, change it to a valid logon and test it again) 
Net Service Name : connect_string 
 
or 
 
Option # 2: Oracle Net Manager 
 
If using Oracle Net Manager, click on Service Naming, then on the menu click
EDIT --> CREATE 
Net Service Name : connect_string 
then rest is all same as specified in Oracle New Configuration Assistant. 
 
or 
 
Option # 3: Manually edit tnsnames.ora and add entry. A typical
TNS entry in tnsnames.ora would like like below:- 
 
<connect_string> = 
 (DESCRIPTION = 
 (ADDRESS_LIST = 
 (ADDRESS =
(PROTOCOL = TCP)(HOST = <ip_or_db_hostname>)(PORT = 1521)) 
 ) 
 (CONNECT_DATA = 
 (SERVER = DEDICATED) 
 (SID = <sid>) 
 ) 
 ) 
 
Hope it helps, 
Babu Rangasamy

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==============
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Best Regards,
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Hi,
Thanks for your reply..
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Dont have any access to the server environment as I have to work through a shared desktop(taking control) :(
Regards,
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Alias LISTENER
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ction
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SNMP OFF
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Cannot connect through TCP/IP

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