A shocking Oracle server operation

This is the case.

We have a project in a certain place, which is exactly the research phase of the demand. Our work is still going smoothly. At the same time, the customer provides us with an Oracle Data Server (TEST) to import system data, the system is used for demonstration.

The servers we use are usually always on, and we can directly access them every morning. Therefore, when we Telnet the server, we perform operations on the application server, telnet IP addresses are recorded at the 'start'-> 'run' of the application server. One morning, because there was no electricity the day before yesterday and our data server was not running, I informed the customer's information center to run the data server's machine, and the machine started, I am on the application server in 'start'-> 'run'. The IP address recorded by the application server is used to connect to the database server. It is strange that the password is incorrect when the database is connected, should no one help us change the password? After several attempts, we can still enter (the original user name is the same as the password, and now I think someone has changed the password). We will start up, and it is strange, and an error is prompted, the database has been started and has not been started. But I cannot connect PL/sqldel? What's wrong ..............................

I am looking at my Telnet IP address. It really scared me to death. I used to connect the wrong database server to a formal server that our customers are using, fortunately, I don't have shotdowm yet. Otherwise, I have to wait ...............

Let's take a look at the IP address we used and the IP address that I used to connect to the wrong one. The last IP address is 23, and the last IP address is 238.

This time it really made me feel cold!