Problems debugging Database Java remotely using JDeveloper 9i (9.04)

I am currently working on a project where we are configuring a COTS product built onto a Oracle 9i database. The product has up versioned and changed its architecture considerably to support Java on the database as well as PL/SQL in the form of an API set. My team are writing custom code to meet the clients requirements and are all proficient PL/SQL developers and have experience with Java but we are having real trouble developing and testing our code in the same way we used to in PL/SQL using tools such as TOAD and PL/SQL Developer. I have invested some time in working out how to remote debug our Java code and have had some success with JDeveloper but have run into the following issues:
1. I am unable to add Java objects or variables to the Watch but can view PL/SQL variables.
2. The reported execution of the code seems inaccurate, i.e. often when I step into the Java code, I receive an exception that prevents me for continuing but suggests little about what has gone wrong.
3. In general, debugging is a very hit or miss affair and does not appear to be a worthwhile tool in fixing code.
Has anyone managed to set up Jdeveloper so that it is as proficient as TOAD or the like in debugging Java and can suggest how to resolve these issues?
Peter
3.

Topic closed. Problem was with with database generated by DBCA. Resolved by TARs on Metalink

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