Multilpe Database on one server

Question

In one server there are 5 database created and all five services are started. When query V$database getting only one database name?
Oracel 11g /Windows 2008
From which view I will get all created on oracel server.

Answer 1

As the others have almost noted, what sql server calls a database is most closely associated with what Oracle calls a schema. But since you know to look for services you seem to understand this. assuming you understand which service names are databases.
So, there are several ways to determine databases on a server, if you happen to tell us what you want to do with the information we could help you do it. It is difficult to generalize though, because over time a server might be administered strangely, and have useless crap left over. Oracle recommends one database on a host (well, it's more complicated than that, but essentially), so there are assumptions both in the docs and in some tools that this will be the case. Then there are these "instance" thingees which may or may not be associated with a database.
If you expect the databases to talk to each other, there may be db links. select * from dba_db_links;
There will be sets of registry entries, you could look for oracle in the registry.
There are probably ways to look at services.
tnsnames may give clues, but understand there may be things missing and may be different ways to establish services to the same database and may be multiple tnsnames and may be typos with unexpected effects.