I get the following error that is thrown when
query.execute(parameters, context); is called.

java.sql.SQLException: Unknown type '246 in column 1 of 2 in binary-encoded result set.

I have tried two JDBC connectors:
mysql-connector-java-3.1.12 and mysql-connector-java-3.2.0-alpha

For this example I am using mysql-5.0.16-win32 as the database.
Advise on what I need to do to solve this problem will be appreciated.

Can you give more information?
What kind of persistence do you use?
What kind of request do you execute?