Tope, and while I don't use sybase and don't KNOW your answer, I suspect your error relates to the jdbc3 jar you're using and that you need a jdbc4 version.

1) First, are you a license key for cf, or or the free trial or developer edition of cf? In those, as well as when using a cf enterprise license, Adobe provides a licensed sybase jdbc connector for you. Otherwise, yes, you need to provide one.

So unless you're using a cf Standard license, try just using the sybase driver option offered when creating a cf datasource (if none is offered, that's further confirmation you're on cf Standard. The top of the cf admin window also reports what cf edition you're running.)

If you go that route, you can remove that older sybase jar you'd implemented.

2) Finally, if you ARE running cf Standard and MUST add a jdbc driver, the it seems you need a newer one. I've looked, but I and it doesn't seem that sap offers that freely. So first, it seems you should be able to get the jar from within a folder of the installed sybase db you're connecting to. I realize that maybe on another machine, and perhaps you can't even get the people responsible for that to find it for you.

In that case, another option is to download the free trial of sybase, just to get the jar. Again, the sap makes you jump through hoops to get that trial (as does Adobe for cf's trial), but give it a shot: https://developers.sap.com/trials-downloads.html?search=jdbc

Someday that link may not work, and perhaps this will: https://www.sap.com/products/technology-platform/sybase-ase/trial.html

And finally this link used to work but doesn't as I try today: http://www.sybase.com/products/allproductsa-z/softwaredeveloperkit/jconnect

Let us know if the simpler first solution above may suit you, or if you try the updated jar route.