Thanks ebrian,

I started using the commad "lsnrct start newDB".
It started the listener successfully.

In the lsnrctl commad output i found an error

Failed to open service , error 1060

This occured for the first time when i start newDB listener.

Is there is any method to register a service prior to start of the listener (in windows and Unix flavoured operating systems).

With regards,
Prasad.