How to install and configure an UNIX Oracle shared database

Question

Hello everybody,
we have a SUN Solaris UNIX,
we have no problem for installing and configurate a typical database.
So we want a "shared" database (multithread).
When we try (deployement of a java application with JDevelopper), we cannot access to our instance of the shared database.
The error message is :
"SQLException: The network adapter could not establish the connection".
The architecture of our project include CISCO firewalls.
I think the configuration of Multi thread Server is not Ok or there are
a bug with firewalls.
How can i check a good shared configuration ?
What is the good configuration ?
If Somebody can help me with response and eventually samples of good
initialisation files like init.ora, listener.ora, sqlnet.ora ...
Thank you very much.

Answer 1

You can try this methodology to test connectivity :
From the server itself :
sqlplus username/password@tns
where tns is the alias of your database containing :
SID , machine ( where your db reside ) and port.
If you cannot connect from here , then check your tnsname.ora if you got the right entry.
From a client : ( different machine )
where tns is the alias of your database containing :
SID , machine ( where your db reside ) and port.
If you cannot connect from here , then check your tnsname.ora if you got the right entry
use SQLPLUS first to test connectivity, and if you were
able to run this process then move on run your java codes.
If installing sqlplus from the client is a hassle, first write a
java code testing just the connectivity with sqlplus installed
on the first machine and make it work first. Then you can
use this code to other clients without installing sqlplus.