Stop the listener if running
Replace listener.ora with the following values.
Then try starting the listener.Code:LISTENER = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = 132.147.2.27)(PORT = 1521)) ) SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (ORACLE_HOME = /oracle/app/oracle/product/8.1.7) (SID_NAME = HURTADO) ) )
also post the .profile
no uppercase or lowercase doesn't matter.