$ lsnrctl start
LSNRCTL for Linux: Version 10.2.0.1.0 - Production on 26-3月 -2010 20:26:54
Starting /oracle/product/10.2.0/db_1/bin/tnslsnr: please wait...
TNS-12537: TNS:connection closed
TNS-12560: TNS:protocol adapter error
TNS-00507: Connection closed
Linux Error: 29: Illegal seek
解决：
在 /etc/hosts 加入
127.0.0.1 localhost.localdomain localhost