The Progress DataDirect Type 5 JDBC Sybase driver delivers the best performance and scalability for Java applications connecting to Sybase ASE. DataDirect Connect for JDBC provides the benefits of Type 5 features across all Sybase versions.
DataDirect's Sybase JDBC driver is the performance and scalability leader in SPECjAppServer/ECPerf benchmarks. In addition, a single Sybase JDBC driver supports simultaneous connections to all versions of Sybase. DataDirect Connect for JDBC solves the limitations of Type 4 JDBC drivers such as slow or inconsistent performance and inefficient use of resources.
Progress DataDirect (http://www.datadirect.com/)