在centos中装完oracle11g后，启动监听报错
TNS-01201: Listener cannot find executable。。。。
在Pub中搜到解决办法：
TNS-01201 Listener cannot find executable string for SID string
Cause: The executable for the Oracle dedicated server process cannot be found.
Action: Check the appropriate SID_DESC in LISTENER.ORA to make sure that
the ORACLE_HOME component is pointing to a valid location. If this
component is not set, then check the value of the ORACLE_HOME
environment variable.

原因：在执行Oracle专用服务器进程时不能被发现
解决办法：检查listener.ora中sid_desc下的oracle_home是否为有效的路径。