看看sqlnet.ora，怎么修改的？

正常这样设置就行：

#To enable and disable valid node checking for incoming connections. If this parameter is set to yes, then incoming connections are allowed only if they originate from a node that conforms to list specified by TCP.INVITED_NODES or TCP.EXCLUDED_NODES parameters.

tcp.validnode_checking = yes

#To specify which clients are allowed access to the database.

tcp.invited_nodes = (192.168.0.*,192.168.10.*,192.168.20.*,192.168.30.*,192.168.40.*,10.201.39.*,10.201.29.*)

#To specify which clients are denied access to the database

tcp.excluded_nodes = (*)