You can display the names of the function-string classes used in your Replication Server system using one of the Replication Server admin commands.
Use admin show_function_classes to display the names of existing function-string classes and their parent classes. It also indicates the inheritance level of the class. Level 0 is a base class such as rs_default_function_class or rs_db2_function_class, level 1 is a derived class that inherits from a base class, and so on.
admin show_function_classes
Class ParentClass Level -------- ------------ ----- sql_derived_class rs_default_function_class 1 rs_db2_derived_class rs_db2_function_class 1 rs_db2_function_class 0 ...
See Replication Server Reference Manual > Replication Server Commands > admin show_function_classes.