I am pasting here the contents of Listener.ora. Machine name is shobha and the database running at the time is Oracle8.

Thanks
shobha

LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = SHOBHA)(PORT = 1521))
(PROTOCOL_STACK =
(PRESENTATION = TTC)
(SESSION = NS)
)
)

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = Oracle8.WORLD)
(ORACLE_HOME = d:\oracle\ora81)
(SID_NAME = oracle8)
)
)