Nisam radio sa SQL Serverom ali sam naleto slučajno na ovaj projekat na SF. Ne znam da li i kako radi, ali kažu da radi sa SQL serverom:
http://jtds.sourceforge.net/
A na Hibernete sajtu pominju sledeće drajvere za SQL server. Ne verujem da je ijedan besplatan. Da ne bude zabune ovde se govori sa kojim od njih radi Hibernate:
"Microsoft SQL Server does not ship with a JDBC driver. Various third party drivers are available, some (but not all) of which do work. The following drivers are known to work:
JSQL
http://www.j-netdirect.com
JTurbo
http://www.newatlanta.com/products/jturbo
Weblogic jDriver
http://www.bea.com/products/weblogic/drivers.shtml
It is quite likely that you will be able to use either of the following two drivers (which actually appear to be the same driver) successfully:
Microsoft SQL Server 2000 Driver for JDBC (sp1)
http://microsoft.com
DataDirect Connect for JDBC
http://ddtek.com
but there are some weird date-handling issues with these drivers, so they are not officially supported. Don't bother with the DataDirect SequeLink driver; it has very serious problems."
Probaj neki od njih možda ti proradi...
Dejan