Oracle Server configuration: Listener is not started or the database service is not registered to the listener

The first time you install Oracle, there is no problem at all,

But when I went to configure Oracle_home, I entered the database configuration Assistant by mistake,

Then configure the existing database, there is a problem, pop up the above dialog box, how can not be configured,

Directly into NET Manager to configure Tnsname.ora and Listener.ora have been failed to verify,

Query a lot of information, about half a day, comprehensive and understand must be " database service is not registered to this listener ",

In the spirit of where to fall from where to climb up,

So I finally went back to database configuration Assistant to delete the previously configured databases,

Everything starts anew, new database is configured,

Sure enough, there was no problem in the middle, and of course it was with me when I was looking at the information. Ora and some other things have been out of the relationship.

The following is a more valuable article I see in the process of reading, although not help me, I think to colleagues still helpful:

(Sorry, forgot to save the road)

Oracle Server configuration: Listener is not started or the database service is not registered to the listener