problem in opening DB connection in C# to Oracle

I have the following source code (see the end of this msg)  in my  TestOracle app.
But it is always giving error:
System.Data.OracleClient.OracleException: Error while trying to retrieve text for error ORA-12154

   at System.Data.OracleClient.DBObjectPool.GetObject(Object owningObject, Boolean& isInTransaction)
   at System.Data.OracleClient.OracleConnectionPoolManager.GetPooledConnection(String encryptedConnectionString, OracleConnectionString options, OracleConnection owningObject, Boolean& isInTransaction)
   at System.Data.OracleClient.OracleConnection.OpenInternal(OracleConnectionString parsedConnectionString, Object transact)
   at System.Data.OracleClient.OracleConnection.Open()
   at TestOracle.Form1..ctor() in c:\testoracle\testoracle\form1.cs:line 38

What's wrong?

Thanks a lot.



String connString="Data Source=Oracle8i;Server=testserver;Uid=jennifer;Pwd=welcome";
                  OracleConnection conn = new OracleConnection(connString);
                  catch(Exception e)

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Hmm looks like, your connection string is in incorrect format

it should be
String connString="User id=jennifer;Password=welcome;source=testserver";

now try
Take a look at this previous asked question about the exact same error:



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jfz2004Author Commented:
Hi,  ryerras,

Thanks for your input. But I tried:
String connString="User id=jennifer;Password=welcome;source=testserver";
Still got the same error.

jfz2004Author Commented:
Hi, Chester_M_Ragel,

I checked that I do have tnsnames.ora and it contains
the correct names.


ok. Did you try to login in sqlplus, is that working? what version of oracle client are you using?
jfz2004Author Commented:
Thanks for all the help. I just found out what was wrong.
Here's how I figured it out:
1. I sent the source to my co-worker and he could run it on his
machine without any problem.
2. That means some setting is not right on my machine.
3. So I checked that my tnsnames.ora is there and readable and correct.
4. Finally, I checked that we compare our registry and found I don't
have ORACLE in my registry.

After I inserted the registry the ORACLE, it worked.

What a learning curve!

Thanks for all your help!

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