When you access remote servers defined with JDBC-based classes, consider that:
For optimum performance, Sybase recommends an ODBC-based class (saodbc or aseodbc).
Any remote server that you access using the asejdbc or sajdbc server class must be set up to handle a jConnect 5.5-based client. The jConnect setup scripts are jcatalog.sql for SQL Anywhere or sql_server.sql for Adaptive Server Enterprise. Run these against any remote server you will be using.