Problems connecting to Oracle 8i database

Hi,
I have installed Oracle 8i Enterprise on Win2k Server and created a database. Using Net8 Configuration tool, I have created service name. I was able to connect to this service but now for some reason I can't connect to this service, I tried setting up diffrent listener for this service at different port but that also is not working, then finally I ended up reinstalling 8i on same machine and now its not recognising the new database instance. The messages ,am getting is "TNS: no listener.." "TNS: Oracle ...service does not exist" in services all services and listeners are started. "listener.ora" and "tnsnames.ora" files have required entries. Please help or advise ASAP. (I was the one who pushed for Oracle in our company against MS-SQL server and now Iam realising the pain)

Can you connect to the database on the server, using SQL*PLUS? I have installed Oracle 8i on 2 Win2K Servers which are also Primary Domain Controllers; when rebooted, their databases are not automatically started, as it is on my other servers which are pure database servers; perhaps this is your problem. I cured mine with a call to server manager in the server startup, but I'm sure there's a better solution!
If the database is indeed open, from the command prompt try
LSNRCTL START which will start the listener or at least give you some more info as to the listener.How are you attempting to connect?

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