ASA SQL User's Guide
Debugging Logic in the Database
You can use the debugger during the development of the following objects:
SQL stored procedures, triggers, event handlers, and user-defined functions.
Java stored procedures in the database.
This chapter describes how to set up and use the debugger.
Java in the database is a separately licensable component and must be ordered before you can install it. To order this component, see the card in your SQL Anywhere Studio package or see 
http://www.sybase.com/detail?id=1015780.
Debugger features
Requirements for using the debugger