I just installed windows 7 on my new machine and I try to connect Oracle server database through on Telnet but unfortunately i cannot connect telnet. The telnet program doesnot configured on windows 7 when you’re done first installation.so you need to configure Telnet program.In this case,you should follow these steps and then you can connect telnet program.
Step 1: Open Control panel and Choose program on control panel, then click Turn windows features on or off.
Step 2: After click , a new window appear, you can choose Client telnet and then OK.
Step 3: The windows make new feautre.
Step 4: After changes, you can now connect Telnet, cmd> telnet Enter.
Step 6: Now you can connect Oracle database through on telnet.
Step 6: Enter your OS oracle group username and password.
Step 7: Finally you can connect database after you given oracle username and password.