10G JNDI problems

Question

I migrated from 9.0.3 to 9.0.4 and now have the following problem. I am using the local OC4J instance. I am attempting to get the connection to the database using the following code:
try
Context ctxt = new InitialContext();
DataSource ds = (DataSource PortableRemoteObject.narrow(ctxt.lookup("jdbc/RVDS"), DataSource.class);
con = ds.getConnection();
catch (Exception ex)
ex.printStackTrace();
The stack trace is as follows:
04/04/05 12:46:36 javax.naming.NamingException: com.evermind.server.ApplicationInitialContextFactory should only be used inside Orion server environments. For client com.evermind.server.ApplicationClientInitialContextFactory or com.evermind.server.rmi.RMIInitialContextFactory should be used
04/04/05 12:46:36      at com.evermind.server.PreemptiveApplicationContext.getContext(PreemptiveApplicationContext.java:31)
04/04/05 12:46:36      at com.evermind.naming.FilterContext.lookup(FilterContext.java:138)
04/04/05 12:46:36      at javax.naming.InitialContext.lookup(InitialContext.java:347)
04/04/05 12:46:36      at MVRInit.jspService(MVRInit.jsp:35)
04/04/05 12:46:36      at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:139)
...MORE...
This was working just fine in 9.0.3, Any ideas what is happening?

Answer 1

Kevin -- I'm not sure why it's not working anymore. What you have there looks kind of funky -- you're doing a remote cast on a local object. The stacktrace is telling you that it's not a supported operation -- when you just construct an InitialContext with no parameters, it gives you ApplicationInitialContextFactory, which doesn't support this remote lookup and casting
If you want to get a datasource from JNDI from a servlet/ejb running in the local OC4J container, then it's actually a little bit easier to do. There's no need to do the PortableRemoteObject.narrow(string,class).
If you had a datasource defined with a location of "jdbc/RVDS", and assuming you don't want to do the fully abstract resource-ref-mapping, then you should be able to get the datasource just by doing a lookup of the initialcontext.
try
  InitialContext ic = new InitialContext();
  DataSource ds = (DataSource)ic.lookup("jdbc/RVDS");
  Connection con = ds.getConnection();
If you were running on a remote node (ie application client) and wanted to get a DS from an OC4J instance, then you'd need to use the ApplicationClientInitialContextFactory and specify a corresponding resource ref entry in the deployment descriptor and then look that up.
hope that helps
-steve-