1. To open a command window, select Start --> Run --> cmd.
2. To check the ORACLE Database Listener, type:
>tnsping mstore
For example:
Used TNSNAMES adapter to resolve the alias.
Attempting to contact (description= (address= (protocol=ipc) (key=mst1)) (connect_data=(sid=mst1)(srvr=dedicated)))
OK (10 msec)
3. If OK does not appear, try to restart the Listener. Type:
>lsnrctl stop
>lsnrctl start
4. Repeat the test.
If the test still fails, contact Customer Service.