oracle 7.3.4监听不能启动，求助

eskimos

在用lsnrctl start 启动监听时，报
LSNRCTL for SCO System V/386: Version 2.3.4.0.0 - Production on 28-APR-05 14:42:
52

Copyright (c) Oracle Corporation 1994.  All rights reserved.

Starting /u/oracle/app/oracle/product/7.3.4/bin/tnslsnr: please wait...

TNSLSNR for SCO System V/386: Version 2.3.4.0.0 - Production
System parameter file is /etc/listener.ora
Log messages written to /u/oracle/app/oracle/product/7.3.4/network/log/listener.
log
Attempted to listen on: (DESCRIPTION=(CONNECT_TIMEOUT=10)(ADDRESS=(PROTOCOL=IPC)
(KEY=oracle7)))
TNS-12532: TNS:invalid argument
TNS-12560: TNS:protocol adapter error
  TNS-00502: Invalid argument
   SCO System V/386 Error: 22: Invalid argument