大家看看这个问题

oracle初学者

LSNRCTL for Linux: Version 8.1.6.0.0 - Production on 24-JUL-2000
16:47:40

(c) Copyright 1998, 1999, Oracle Corporation.  All rights reserved.

Starting /ora8/m01/app/oracle/product/8.1.6/bin/tnslsnr: please
wait...

TNSLSNR for Linux: Version 8.1.6.0.0 - Production
System parameter file is
/ora8/m01/app/oracle/product/8.1.6/network/admin/listener.ora
Log messages written to
/ora8/m01/app/oracle/product/8.1.6/network/log/listener.log
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=PNPKEY)))
Attempted to listen on: (ADDRESS=(PROTOCOL=tcp)(PORT=1521))
TNS-12542: TNS:address already in use
TNS-12560: TNS:protocol adapter error
  TNS-00512: Address already in use
   Linux Error: 98: Address already in use

remen

从表面看的话好像是你的这个实例已经被其他实例占用，是不是设重了？？
还是你的1521端口已经分配给其他实例？？

oracle初学者

ok!
use "127.0.0.1"replace "localhost" in file "tnsnames.ora"