TNS-12537,TNS-12560,TNS-00507问题解决

TNS-12537,TNS-12560,TNS-00507问题解决！

SymptomsThe listener fails to start with the following errors:
TNS-12537: TNS:connection closed
TNS-12560: TNS:protocol adapter error
TNS-00507: Connection closed
Linux Error: 29: Illegal seek
Generic to Unix platforms. CauseWrong syntax in hosts file and also due to the the tnslsnr process was enhanced in 
10.1.0.3 to support FAN(Fast Application Notification) via
ONS (Oracle Notification Services). This new code opens a socket open on localhost. Therefore
"localhost" should be defined on the system.

This new code opens a socket open on localhost. Therefore "localhost" should be defined on the
system. Fix

Change /etc/hosts file to include

127.0.0.1 localhost.localdomain localhost