Could be anything...the JDBC/ODBC bridge isn't the most stable/robust driver
in the world, and the error is actually outside both Tomcat and the JVM.
You might want to try the Type 4 JDBC driver available from Microsoft, its
free and provides native support for SQL Server instead of using the OD
Have a look at the list archives _before_ posting a question. You would have
noticed that this question has been answered many times. The JDBC-ODBC
bridge from sun is not thread safe and is liable to crash like that
periodically. There's a free JDBC driver available from Microsoft or other
3rd Par