1. No monitor, you can try the following ways below:
1) Reconfigure the net manager to listen in. My net manager listens point they can not, under the listener.ora ADMIN deleted again open to try.
2) cmd enter netca can also be configured, you may be prompted not have administrator privileges, this time to re-open cmd, win + x, bring up the administrator rights, re-execute netca configure it.
Here you can modify the original monitor, you can also create a new, first time I do not know what modifications did not work, and the second will have to try new administrator privileges, add successful, but to be relevant in the services net manager configuration is also in accordance with the new listener configuration changes (mainly the service name).
2. Can not find routines suitable for client connections
Plus SID in the tnsnames.ora file, as follows. Then be sure to restart the service in listening and oracle service! ! ! ! It will not take effect without rebooting.
= Demo
(the DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP) (HOST = hostname) (PORT = port number))
)
(CONNECT_DATA =
(SERVER = SHARED)
(SID=demo)
)
)