I am trying to interface with firebird from the SUN JavaCAPS product through
its JDBC adaptor.

There are two configuration settings of relevance

ClassName, which is typically the datasource/pool class, and
ClassNameforOtherInterfaces, which is the driver class

So I have entered,

ClassName org.firebirdsql.jdbc.FBWrappingDataSource
ClassNameforOtherIbterfaces org.firebirdsql.jdbc.FBDriver

However, I get this runtime error
java.lang.ClassCastException: org.firebirdsql.jdbc.FBWrappingDataSource
...
javax.resource.spi.ResourceAllocationException: Error in allocating a
connection. Cause: org.firebirdsql.jdbc.FBWrappingDataSource


Any suggestions of how to resolve this?

Regards,
Rupert